157912613 has 2 divisors, whose sum is σ = 157912614. Its totient is φ = 157912612.

The previous prime is 157912571. The next prime is 157912619. The reversal of 157912613 is 316219751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94439524 + 63473089 = 9718^2 + 7967^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157912613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157912619) 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 as a sum of consecutive naturals, namely, 78956306 + 78956307.

It is an arithmetic number, because the mean of its divisors is an integer number (78956307).

Almost surely, 2^157912613 is an apocalyptic number.

It is an amenable number.

157912613 is a deficient number, since it is larger than the sum of its proper divisors (1).

157912613 is an equidigital number, since it uses as much as digits as its factorization.

157912613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 35.

The square root of 157912613 is about 12566.3285409860. The cubic root of 157912613 is about 540.5123315524.

The spelling of 157912613 in words is "one hundred fifty-seven million, nine hundred twelve thousand, six hundred thirteen".