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13159149 = 34386383
BaseRepresentation
bin110010001100…
…101011101101
3220202112221220
4302030223231
511332043044
61150013553
7216564603
oct62145355
926675856
1013159149
117478733
1244a72b9
1329597a3
141a67873
15124e019
hexc8caed

13159149 has 4 divisors (see below), whose sum is σ = 17545536. Its totient is φ = 8772764.

The previous prime is 13159147. The next prime is 13159187. The reversal of 13159149 is 94195131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94195131 = 331398377.

It is a cyclic number.

It is not a de Polignac number, because 13159149 - 21 = 13159147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13159147) 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, 2193189 + ... + 2193194.

It is an arithmetic number, because the mean of its divisors is an integer number (4386384).

Almost surely, 213159149 is an apocalyptic number.

It is an amenable number.

13159149 is a deficient number, since it is larger than the sum of its proper divisors (4386387).

13159149 is an equidigital number, since it uses as much as digits as its factorization.

13159149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4386386.

The product of its digits is 4860, while the sum is 33.

The square root of 13159149 is about 3627.5541346753. The cubic root of 13159149 is about 236.0890990301.

It can be divided in two parts, 13159 and 149, that multiplied together give a palindrome (1960691).

The spelling of 13159149 in words is "thirteen million, one hundred fifty-nine thousand, one hundred forty-nine".

Divisors: 1 3 4386383 13159149