1990747496 has 24 divisors (see below), whose sum is σ = 3939452370. Its totient is φ = 942984288.

The previous prime is 1990747459. The next prime is 1990747501. The reversal of 1990747496 is 6947470991.

It can be written as a sum of positive squares in only one way, i.e., 1763160100 + 227587396 = 41990^2 + 15086^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 341771 + ... + 347546.

Almost surely, 2^1990747496 is an apocalyptic number.

It is an amenable number.

1990747496 is a deficient number, since it is larger than the sum of its proper divisors (1948704874).

1990747496 is a wasteful number, since it uses less digits than its factorization.

1990747496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689361 (or 689338 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 56.

The square root of 1990747496 is about 44617.7934909381. The cubic root of 1990747496 is about 1257.9751419570.

The spelling of 1990747496 in words is "one billion, nine hundred ninety million, seven hundred forty-seven thousand, four hundred ninety-six".