1316857360 has 120 divisors (see below), whose sum is σ = 3835676376. Its totient is φ = 416747520.

The previous prime is 1316857319. The next prime is 1316857379. The reversal of 1316857360 is 637586131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 38416 + 1316818944 = 196^2 + 36288^2 .

It is a super-2 number, since 2×1316857360² = 3468226613172339200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38040 + ... + 63880.

Almost surely, 2^1316857360 is an apocalyptic number.

1316857360 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 1316857360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1917838188).

1316857360 is an abundant number, since it is smaller than the sum of its proper divisors (2518819016).

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

1316857360 is a wasteful number, since it uses less digits than its factorization.

1316857360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25881 (or 25868 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 1316857360 is about 36288.5293171272. The cubic root of 1316857360 is about 1096.0900746472.

The spelling of 1316857360 in words is "one billion, three hundred sixteen million, eight hundred fifty-seven thousand, three hundred sixty".