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190201481 = 541935099
BaseRepresentation
bin10110101011000…
…11111010001001
3111020220020101022
423111203322021
5342142421411
630512402225
74466454161
oct1325437211
9436806338
10190201481
1198400208
1253846375
1330536372
141b3915a1
1511a70edb
hexb563e89

190201481 has 4 divisors (see below), whose sum is σ = 190242000. Its totient is φ = 190160964.

The previous prime is 190201469. The next prime is 190201489. The reversal of 190201481 is 184102091.

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 190201481 - 214 = 190185097 is a prime.

It is a super-2 number, since 2×1902014812 = 72353206749186722, which contains 22 as substring.

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 190201481.

It is not an unprimeable number, because it can be changed into a prime (190201489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12131 + ... + 22968.

It is an arithmetic number, because the mean of its divisors is an integer number (47560500).

Almost surely, 2190201481 is an apocalyptic number.

It is an amenable number.

190201481 is a deficient number, since it is larger than the sum of its proper divisors (40519).

190201481 is an equidigital number, since it uses as much as digits as its factorization.

190201481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40518.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 190201481 is about 13791.3552996071. The cubic root of 190201481 is about 575.0928454989.

The spelling of 190201481 in words is "one hundred ninety million, two hundred one thousand, four hundred eighty-one".

Divisors: 1 5419 35099 190201481