157237994 has 8 divisors (see below), whose sum is σ = 236728128. Its totient is φ = 78328620.

The previous prime is 157237973. The next prime is 157237999. The reversal of 157237994 is 499732751.

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

It is not an unprimeable number, because it can be changed into a prime (157237999) 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, 144512 + ... + 145595.

It is an arithmetic number, because the mean of its divisors is an integer number (29591016).

Almost surely, 2^157237994 is an apocalyptic number.

157237994 is a deficient number, since it is larger than the sum of its proper divisors (79490134).

157237994 is a wasteful number, since it uses less digits than its factorization.

157237994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290380.

The product of its digits is 476280, while the sum is 47.

The square root of 157237994 is about 12539.4574842774. The cubic root of 157237994 is about 539.7415246752.

The spelling of 157237994 in words is "one hundred fifty-seven million, two hundred thirty-seven thousand, nine hundred ninety-four".