1313938260 has 180 divisors, whose sum is σ = 4210914708. Its totient is φ = 342966528.

The previous prime is 1313938259. The next prime is 1313938291. The reversal of 1313938260 is 628393131.

1313938260 is a `hidden beast` number, since 1 + 3 + 1 + 393 + 8 + 260 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 365421456 + 948516804 = 19116^2 + 30798^2 .

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 5639104 + ... + 5639336.

Almost surely, 2^1313938260 is an apocalyptic number.

1313938260 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 1313938260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2105457354).

1313938260 is an abundant number, since it is smaller than the sum of its proper divisors (2896976448).

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

1313938260 is a wasteful number, since it uses less digits than its factorization.

1313938260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 1313938260 is about 36248.2863043206. The cubic root of 1313938260 is about 1095.2795683236.

The spelling of 1313938260 in words is "one billion, three hundred thirteen million, nine hundred thirty-eight thousand, two hundred sixty".