1316647872 has 168 divisors, whose sum is σ = 4041436672. Its totient is φ = 424569600.

The previous prime is 1316647861. The next prime is 1316647901. The reversal of 1316647872 is 2787466131.

1316647872 is a `hidden beast` number, since 13 + 166 + 478 + 7 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 480747 + ... + 483477.

Almost surely, 2^1316647872 is an apocalyptic number.

1316647872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1316647872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2020718336).

1316647872 is an abundant number, since it is smaller than the sum of its proper divisors (2724788800).

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

1316647872 is an equidigital number, since it uses as much as digits as its factorization.

1316647872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2789 (or 2767 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 1316647872 is about 36285.6427805820. The cubic root of 1316647872 is about 1096.0319489150.

The spelling of 1316647872 in words is "one billion, three hundred sixteen million, six hundred forty-seven thousand, eight hundred seventy-two".