1990902412 has 12 divisors (see below), whose sum is σ = 3489519096. Its totient is φ = 993896960.

The previous prime is 1990902377. The next prime is 1990902427. The reversal of 1990902412 is 2142090991.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385678 + ... + 390805.

It is an arithmetic number, because the mean of its divisors is an integer number (290793258).

Almost surely, 2^1990902412 is an apocalyptic number.

It is an amenable number.

1990902412 is a deficient number, since it is larger than the sum of its proper divisors (1498616684).

1990902412 is a wasteful number, since it uses less digits than its factorization.

1990902412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777128 (or 777126 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 1990902412 is about 44619.5294910200. The cubic root of 1990902412 is about 1258.0077721495.

The spelling of 1990902412 in words is "one billion, nine hundred ninety million, nine hundred two thousand, four hundred twelve".