1315370988 has 120 divisors (see below), whose sum is σ = 3832844400. Its totient is φ = 390915072.

The previous prime is 1315370981. The next prime is 1315371019. The reversal of 1315370988 is 8890735131.

1315370988 is a `hidden beast` number, since 1 + 31 + 537 + 0 + 9 + 88 = 666.

It is a super-2 number, since 2×1315370988² = 3460401672144192288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1315370981) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 98368 + ... + 110936.

It is an arithmetic number, because the mean of its divisors is an integer number (31940370).

Almost surely, 2^1315370988 is an apocalyptic number.

1315370988 is a gapful number since it is divisible by the number (18) 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 1315370988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1916422200).

1315370988 is an abundant number, since it is smaller than the sum of its proper divisors (2517473412).

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

1315370988 is a wasteful number, since it uses less digits than its factorization.

1315370988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12621 (or 12610 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 1315370988 is about 36268.0436196936. The cubic root of 1315370988 is about 1095.6775240290.

The spelling of 1315370988 in words is "one billion, three hundred fifteen million, three hundred seventy thousand, nine hundred eighty-eight".