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190351129 = 316140359
BaseRepresentation
bin10110101100010…
…00011100011001
3111021011211122211
423112020130121
5342212214004
630515515121
74500646363
oct1326103431
9437154584
10190351129
11984a2691
12538b8aa1
1330589507
141b3cdd33
1511aa0504
hexb588719

190351129 has 4 divisors (see below), whose sum is σ = 196491520. Its totient is φ = 184210740.

The previous prime is 190351127. The next prime is 190351201. The reversal of 190351129 is 921153091.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 190351129 - 21 = 190351127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 6140359 = 190351129 / (1 + 9 + 0 + 3 + 5 + 1 + 1 + 2 + 9).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 190351129.

It is not an unprimeable number, because it can be changed into a prime (190351127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3070149 + ... + 3070210.

It is an arithmetic number, because the mean of its divisors is an integer number (49122880).

Almost surely, 2190351129 is an apocalyptic number.

It is an amenable number.

190351129 is a deficient number, since it is larger than the sum of its proper divisors (6140391).

190351129 is an equidigital number, since it uses as much as digits as its factorization.

190351129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6140390.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 190351129 is about 13796.7796604860. The cubic root of 190351129 is about 575.2436310989.

It can be divided in two parts, 19035 and 1129, that added together give a square (20164 = 1422).

The spelling of 190351129 in words is "one hundred ninety million, three hundred fifty-one thousand, one hundred twenty-nine".

Divisors: 1 31 6140359 190351129