157872158 has 4 divisors (see below), whose sum is σ = 236808240. Its totient is φ = 78936078.

The previous prime is 157872131. The next prime is 157872193. The reversal of 157872158 is 851278751.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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, 39468038 + ... + 39468041.

It is an arithmetic number, because the mean of its divisors is an integer number (59202060).

Almost surely, 2^157872158 is an apocalyptic number.

157872158 is a deficient number, since it is larger than the sum of its proper divisors (78936082).

157872158 is an equidigital number, since it uses as much as digits as its factorization.

157872158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78936081.

The product of its digits is 156800, while the sum is 44.

The square root of 157872158 is about 12564.7187791848. The cubic root of 157872158 is about 540.4661703803.

The spelling of 157872158 in words is "one hundred fifty-seven million, eight hundred seventy-two thousand, one hundred fifty-eight".