157437013 has 2 divisors, whose sum is σ = 157437014. Its totient is φ = 157437012.

The previous prime is 157436999. The next prime is 157437029. The reversal of 157437013 is 310734751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150847524 + 6589489 = 12282^2 + 2567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157437013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157437043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78718506 + 78718507.

It is an arithmetic number, because the mean of its divisors is an integer number (78718507).

Almost surely, 2^157437013 is an apocalyptic number.

It is an amenable number.

157437013 is a deficient number, since it is larger than the sum of its proper divisors (1).

157437013 is an equidigital number, since it uses as much as digits as its factorization.

157437013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 157437013 is about 12547.3906849193. The cubic root of 157437013 is about 539.9691489005.

The spelling of 157437013 in words is "one hundred fifty-seven million, four hundred thirty-seven thousand, thirteen".