315638605 has 16 divisors (see below), whose sum is σ = 389816064. Its totient is φ = 245227840.

The previous prime is 315638573. The next prime is 315638611. The reversal of 315638605 is 506836513.

It is not a de Polignac number, because 315638605 - 2⁵ = 315638573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25659 + ... + 35911.

It is an arithmetic number, because the mean of its divisors is an integer number (24363504).

Almost surely, 2^315638605 is an apocalyptic number.

It is an amenable number.

315638605 is a deficient number, since it is larger than the sum of its proper divisors (74177459).

315638605 is a wasteful number, since it uses less digits than its factorization.

315638605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10436.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 315638605 is about 17766.2208980976. The cubic root of 315638605 is about 680.8687030483.

The spelling of 315638605 in words is "three hundred fifteen million, six hundred thirty-eight thousand, six hundred five".