1315840625388 has 18 divisors (see below), whose sum is σ = 3326152692044. Its totient is φ = 438613541784.

The previous prime is 1315840625381. The next prime is 1315840625417. The reversal of 1315840625388 is 8835260485131.

1315840625388 is a `hidden beast` number, since 1 + 3 + 1 + 5 + 8 + 4 + 0 + 625 + 3 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (1315840625381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18275564206 + ... + 18275564277.

Almost surely, 2^{1315840625388} is an apocalyptic number.

1315840625388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1315840625388 is an abundant number, since it is smaller than the sum of its proper divisors (2010312066656).

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

1315840625388 is a wasteful number, since it uses less digits than its factorization.

1315840625388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36551128493 (or 36551128488 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 1315840625388 in words is "one trillion, three hundred fifteen billion, eight hundred forty million, six hundred twenty-five thousand, three hundred eighty-eight".