318137474 has 8 divisors (see below), whose sum is σ = 477676668. Its totient is φ = 158911920.

The previous prime is 318137471. The next prime is 318137489. The reversal of 318137474 is 474731813.

It can be written as a sum of positive squares in 2 ways, for example, as 290941249 + 27196225 = 17057^2 + 5215^2 .

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

It is a super-2 number, since 2×318137474² = 202422904726201352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (318137471) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 75857 + ... + 79940.

Almost surely, 2^318137474 is an apocalyptic number.

318137474 is a deficient number, since it is larger than the sum of its proper divisors (159539194).

318137474 is a wasteful number, since it uses less digits than its factorization.

318137474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156820.

The product of its digits is 56448, while the sum is 38.

The square root of 318137474 is about 17836.4086631810. The cubic root of 318137474 is about 682.6607645902.

The spelling of 318137474 in words is "three hundred eighteen million, one hundred thirty-seven thousand, four hundred seventy-four".