157937879 has 4 divisors (see below), whose sum is σ = 172295880. Its totient is φ = 143579880.

The previous prime is 157937873. The next prime is 157937881. The reversal of 157937879 is 978739751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978739751 = 11 ⋅88976341.

It is a cyclic number.

It is not a de Polignac number, because 157937879 - 2⁸ = 157937623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157937873) 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, 7178984 + ... + 7179005.

It is an arithmetic number, because the mean of its divisors is an integer number (43073970).

Almost surely, 2^157937879 is an apocalyptic number.

157937879 is a deficient number, since it is larger than the sum of its proper divisors (14358001).

157937879 is a wasteful number, since it uses less digits than its factorization.

157937879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14358000.

The product of its digits is 3333960, while the sum is 56.

The square root of 157937879 is about 12567.3338063409. Note that the first 3 decimals coincide. The cubic root of 157937879 is about 540.5411573188.

The spelling of 157937879 in words is "one hundred fifty-seven million, nine hundred thirty-seven thousand, eight hundred seventy-nine".