1315583856 has 100 divisors (see below), whose sum is σ = 3838143232. Its totient is φ = 435020544.

The previous prime is 1315583791. The next prime is 1315583891. The reversal of 1315583856 is 6583855131.

1315583856 is a `hidden beast` number, since 1 + 3 + 15 + 583 + 8 + 56 = 666.

1315583856 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 160596 + ... + 168588.

Almost surely, 2^1315583856 is an apocalyptic number.

1315583856 is a gapful number since it is divisible by the number (16) 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 1315583856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1919071616).

1315583856 is an abundant number, since it is smaller than the sum of its proper divisors (2522559376).

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

1315583856 is a wasteful number, since it uses less digits than its factorization.

1315583856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8140 (or 8125 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The square root of 1315583856 is about 36270.9781505820. The cubic root of 1315583856 is about 1095.7366257589.

The spelling of 1315583856 in words is "one billion, three hundred fifteen million, five hundred eighty-three thousand, eight hundred fifty-six".