157921879 has 8 divisors (see below), whose sum is σ = 158976000. Its totient is φ = 156871512.

The previous prime is 157921877. The next prime is 157921889. The reversal of 157921879 is 978129751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157921879 - 2¹ = 157921877 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 (157921871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171382 + ... + 172300.

It is an arithmetic number, because the mean of its divisors is an integer number (19872000).

Almost surely, 2^157921879 is an apocalyptic number.

157921879 is a deficient number, since it is larger than the sum of its proper divisors (1054121).

157921879 is an equidigital number, since it uses as much as digits as its factorization.

157921879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1877.

The product of its digits is 317520, while the sum is 49.

The square root of 157921879 is about 12566.6972192378. The cubic root of 157921879 is about 540.5229034107.

It can be divided in two parts, 15792 and 1879, that added together give a palindrome (17671).

The spelling of 157921879 in words is "one hundred fifty-seven million, nine hundred twenty-one thousand, eight hundred seventy-nine".