315668894 has 4 divisors (see below), whose sum is σ = 473503344. Its totient is φ = 157834446.

The previous prime is 315668879. The next prime is 315668921. The reversal of 315668894 is 498866513.

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

It is a super-3 number, since 3×315668894³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78917222 + ... + 78917225.

It is an arithmetic number, because the mean of its divisors is an integer number (118375836).

Almost surely, 2^315668894 is an apocalyptic number.

315668894 is a deficient number, since it is larger than the sum of its proper divisors (157834450).

315668894 is a wasteful number, since it uses less digits than its factorization.

315668894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157834449.

The product of its digits is 1244160, while the sum is 50.

The square root of 315668894 is about 17767.0733099180. The cubic root of 315668894 is about 680.8904813017.

The spelling of 315668894 in words is "three hundred fifteen million, six hundred sixty-eight thousand, eight hundred ninety-four".