1316665536 has 56 divisors (see below), whose sum is σ = 3486393840. Its totient is φ = 438546432.

The previous prime is 1316665529. The next prime is 1316665549. The reversal of 1316665536 is 6355666131.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

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, 408700 + ... + 411908.

Almost surely, 2^1316665536 is an apocalyptic number.

1316665536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1316665536 is an abundant number, since it is smaller than the sum of its proper divisors (2169728304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1316665536 is a wasteful number, since it uses less digits than its factorization.

1316665536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5361 (or 5351 counting only the distinct ones).

The product of its digits is 291600, while the sum is 42.

The square root of 1316665536 is about 36285.8861818201. The cubic root of 1316665536 is about 1096.0368503070.

The spelling of 1316665536 in words is "one billion, three hundred sixteen million, six hundred sixty-five thousand, five hundred thirty-six".