1316508380 has 48 divisors (see below), whose sum is σ = 3031257600. Its totient is φ = 476308800.

The previous prime is 1316508379. The next prime is 1316508397. The reversal of 1316508380 is 838056131.

It is a super-2 number, since 2×1316508380² = 3466388629220448800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1316508380.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28745 + ... + 58815.

It is an arithmetic number, because the mean of its divisors is an integer number (63151200).

Almost surely, 2^1316508380 is an apocalyptic number.

1316508380 is a gapful number since it is divisible by the number (10) 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 1316508380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1515628800).

1316508380 is an abundant number, since it is smaller than the sum of its proper divisors (1714749220).

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

1316508380 is a wasteful number, since it uses less digits than its factorization.

1316508380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30290 (or 30288 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1316508380 is about 36283.7205920231. The cubic root of 1316508380 is about 1095.9932412516.

The spelling of 1316508380 in words is "one billion, three hundred sixteen million, five hundred eight thousand, three hundred eighty".