1316115520 has 112 divisors (see below), whose sum is σ = 3349282608. Its totient is φ = 490864640.

The previous prime is 1316115511. The next prime is 1316115527. The reversal of 1316115520 is 255116131.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1617984 + 1314497536 = 1272^2 + 36256^2 .

It is not an unprimeable number, because it can be changed into a prime (1316115527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613650 + ... + 615790.

It is an arithmetic number, because the mean of its divisors is an integer number (29904309).

Almost surely, 2^1316115520 is an apocalyptic number.

1316115520 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 1316115520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1674641304).

1316115520 is an abundant number, since it is smaller than the sum of its proper divisors (2033167088).

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

1316115520 is a wasteful number, since it uses less digits than its factorization.

1316115520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288 (or 2278 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 1316115520 is about 36278.3064654347. The cubic root of 1316115520 is about 1095.8842117542.

The spelling of 1316115520 in words is "one billion, three hundred sixteen million, one hundred fifteen thousand, five hundred twenty".