157857938 has 8 divisors (see below), whose sum is σ = 270613632. Its totient is φ = 67653396.

The previous prime is 157857923. The next prime is 157857941. The reversal of 157857938 is 839758751.

It is a happy number.

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

It is a super-2 number, since 2×157857938² = 49838257179223688, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 157857938.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5637770 + ... + 5637797.

It is an arithmetic number, because the mean of its divisors is an integer number (33826704).

Almost surely, 2^157857938 is an apocalyptic number.

157857938 is a deficient number, since it is larger than the sum of its proper divisors (112755694).

157857938 is a wasteful number, since it uses less digits than its factorization.

157857938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11275576.

The product of its digits is 2116800, while the sum is 53.

The square root of 157857938 is about 12564.1528962362. The cubic root of 157857938 is about 540.4499427782.

The spelling of 157857938 in words is "one hundred fifty-seven million, eight hundred fifty-seven thousand, nine hundred thirty-eight".