1331852772 has 24 divisors (see below), whose sum is σ = 3158603392. Its totient is φ = 436672800.

The previous prime is 1331852759. The next prime is 1331852831. The reversal of 1331852772 is 2772581331.

It is a self number, because there is not a number n which added to its sum of digits gives 1331852772.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 909004 + ... + 910467.

Almost surely, 2^1331852772 is an apocalyptic number.

1331852772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1331852772 is an abundant number, since it is smaller than the sum of its proper divisors (1826750620).

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

1331852772 is a wasteful number, since it uses less digits than its factorization.

1331852772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819539 (or 1819537 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 1331852772 is about 36494.5581148752. The cubic root of 1331852772 is about 1100.2348732620.

The spelling of 1331852772 in words is "one billion, three hundred thirty-one million, eight hundred fifty-two thousand, seven hundred seventy-two".