1990756700 has 18 divisors (see below), whose sum is σ = 4319942256. Its totient is φ = 796302640.

The previous prime is 1990756693. The next prime is 1990756739. The reversal of 1990756700 is 76570991.

It is a super-2 number, since 2×1990756700² = 7926224477189780000, which contains 22 as substring.

It is a congruent number.

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, 9953684 + ... + 9953883.

It is an arithmetic number, because the mean of its divisors is an integer number (239996792).

Almost surely, 2^1990756700 is an apocalyptic number.

1990756700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1990756700 is an abundant number, since it is smaller than the sum of its proper divisors (2329185556).

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

1990756700 is a wasteful number, since it uses less digits than its factorization.

1990756700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19907581 (or 19907574 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 44.

The square root of 1990756700 is about 44617.8966335259. The cubic root of 1990756700 is about 1257.9770806568.

The spelling of 1990756700 in words is "one billion, nine hundred ninety million, seven hundred fifty-six thousand, seven hundred".