1315727656 has 32 divisors (see below), whose sum is σ = 2602958400. Its totient is φ = 621768960.

The previous prime is 1315727617. The next prime is 1315727701. The reversal of 1315727656 is 6567275131.

It is a super-2 number, since 2×1315727656² = 3462278529526508672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55821 + ... + 75811.

It is an arithmetic number, because the mean of its divisors is an integer number (81342450).

Almost surely, 2^1315727656 is an apocalyptic number.

It is an amenable number.

1315727656 is a deficient number, since it is larger than the sum of its proper divisors (1287230744).

1315727656 is a wasteful number, since it uses less digits than its factorization.

1315727656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20449 (or 20445 counting only the distinct ones).

The product of its digits is 264600, while the sum is 43.

The square root of 1315727656 is about 36272.9603975193. The cubic root of 1315727656 is about 1095.7765474980.

The spelling of 1315727656 in words is "one billion, three hundred fifteen million, seven hundred twenty-seven thousand, six hundred fifty-six".