1316377520 has 20 divisors (see below), whose sum is σ = 3060577920. Its totient is φ = 526550976.

The previous prime is 1316377501. The next prime is 1316377523. The reversal of 1316377520 is 257736131.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×1316377520² = 3465699550322700800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1316377523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8227280 + ... + 8227439.

It is an arithmetic number, because the mean of its divisors is an integer number (153028896).

Almost surely, 2^1316377520 is an apocalyptic number.

1316377520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1316377520 is an abundant number, since it is smaller than the sum of its proper divisors (1744200400).

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

1316377520 is a wasteful number, since it uses less digits than its factorization.

1316377520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16454732 (or 16454726 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 1316377520 is about 36281.9172591527. The cubic root of 1316377520 is about 1095.9569263978.

The spelling of 1316377520 in words is "one billion, three hundred sixteen million, three hundred seventy-seven thousand, five hundred twenty".