157813129 has 4 divisors (see below), whose sum is σ = 159714576. Its totient is φ = 155911684.

The previous prime is 157813127. The next prime is 157813147. The reversal of 157813129 is 921318751.

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: 921318751 = 23 ⋅40057337.

It is a cyclic number.

It is not a de Polignac number, because 157813129 - 2¹ = 157813127 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157813127) 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, 950599 + ... + 950764.

It is an arithmetic number, because the mean of its divisors is an integer number (39928644).

Almost surely, 2^157813129 is an apocalyptic number.

It is an amenable number.

157813129 is a deficient number, since it is larger than the sum of its proper divisors (1901447).

157813129 is an equidigital number, since it uses as much as digits as its factorization.

157813129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901446.

The product of its digits is 15120, while the sum is 37.

The square root of 157813129 is about 12562.3695615119. The cubic root of 157813129 is about 540.3988011979.

The spelling of 157813129 in words is "one hundred fifty-seven million, eight hundred thirteen thousand, one hundred twenty-nine".