1316525540 has 24 divisors (see below), whose sum is σ = 3016040832. Its totient is φ = 478736480.

The previous prime is 1316525537. The next prime is 1316525549. The reversal of 1316525540 is 455256131.

It is a junction number, because it is equal to n+sod(n) for n = 1316525497 and 1316525506.

It is not an unprimeable number, because it can be changed into a prime (1316525549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2991884 + ... + 2992323.

It is an arithmetic number, because the mean of its divisors is an integer number (125668368).

Almost surely, 2^1316525540 is an apocalyptic number.

1316525540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1316525540 is an abundant number, since it is smaller than the sum of its proper divisors (1699515292).

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

1316525540 is a wasteful number, since it uses less digits than its factorization.

1316525540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5984227 (or 5984225 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 1316525540 is about 36283.9570609381. The cubic root of 1316525540 is about 1095.9980031310.

The spelling of 1316525540 in words is "one billion, three hundred sixteen million, five hundred twenty-five thousand, five hundred forty".