1990513872 has 80 divisors (see below), whose sum is σ = 6014248000. Its totient is φ = 628580736.

The previous prime is 1990513843. The next prime is 1990513939. The reversal of 1990513872 is 2783150991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113047 + ... + 129462.

It is an arithmetic number, because the mean of its divisors is an integer number (75178100).

Almost surely, 2^1990513872 is an apocalyptic number.

1990513872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1990513872 is an abundant number, since it is smaller than the sum of its proper divisors (4023734128).

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

1990513872 is a wasteful number, since it uses less digits than its factorization.

1990513872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242545 (or 242533 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 1990513872 is about 44615.1753554774. The cubic root of 1990513872 is about 1257.9259301772.

The spelling of 1990513872 in words is "one billion, nine hundred ninety million, five hundred thirteen thousand, eight hundred seventy-two".