157197694 has 8 divisors (see below), whose sum is σ = 236497248. Its totient is φ = 78365280.

The previous prime is 157197647. The next prime is 157197721. The reversal of 157197694 is 496791751.

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

It is a super-2 number, since 2×157197694² = 49422229997835272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115942 + ... + 117289.

It is an arithmetic number, because the mean of its divisors is an integer number (29562156).

Almost surely, 2^157197694 is an apocalyptic number.

157197694 is a deficient number, since it is larger than the sum of its proper divisors (79299554).

157197694 is a wasteful number, since it uses less digits than its factorization.

157197694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233570.

The product of its digits is 476280, while the sum is 49.

The square root of 157197694 is about 12537.8504537261. The cubic root of 157197694 is about 539.6954089296.

The spelling of 157197694 in words is "one hundred fifty-seven million, one hundred ninety-seven thousand, six hundred ninety-four".