315637989 has 8 divisors (see below), whose sum is σ = 420938112. Its totient is φ = 210381600.

The previous prime is 315637957. The next prime is 315638021. The reversal of 315637989 is 989736513.

It is an interprime number because it is at equal distance from previous prime (315637957) and next prime (315638021).

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

It is not a de Polignac number, because 315637989 - 2⁵ = 315637957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315635989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14097 + ... + 28809.

It is an arithmetic number, because the mean of its divisors is an integer number (52617264).

Almost surely, 2^315637989 is an apocalyptic number.

It is an amenable number.

315637989 is a deficient number, since it is larger than the sum of its proper divisors (105300123).

315637989 is a wasteful number, since it uses less digits than its factorization.

315637989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21867.

The product of its digits is 1224720, while the sum is 51.

The square root of 315637989 is about 17766.2035618193. The cubic root of 315637989 is about 680.8682601205.

The spelling of 315637989 in words is "three hundred fifteen million, six hundred thirty-seven thousand, nine hundred eighty-nine".