1331552260 has 24 divisors (see below), whose sum is σ = 2797093656. Its totient is φ = 532462080.

The previous prime is 1331552249. The next prime is 1331552273. The reversal of 1331552260 is 622551331.

It can be written as a sum of positive squares in 4 ways, for example, as 14152644 + 1317399616 = 3762^2 + 36296^2 .

It is a super-2 number, since 2×1331552260² = 3546062842222215200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77670 + ... + 93250.

It is an arithmetic number, because the mean of its divisors is an integer number (116545569).

Almost surely, 2^1331552260 is an apocalyptic number.

1331552260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331552260 is an abundant number, since it is smaller than the sum of its proper divisors (1465541396).

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

1331552260 is a wasteful number, since it uses less digits than its factorization.

1331552260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19863 (or 19861 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 1331552260 is about 36490.4406660155. The cubic root of 1331552260 is about 1100.1521167042.

The spelling of 1331552260 in words is "one billion, three hundred thirty-one million, five hundred fifty-two thousand, two hundred sixty".