1990922976 has 240 divisors, whose sum is σ = 6737756256. Its totient is φ = 564931584.

The previous prime is 1990922971. The next prime is 1990922981. The reversal of 1990922976 is 6792290991.

It is an interprime number because it is at equal distance from previous prime (1990922971) and next prime (1990922981).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990922971) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3574090 + ... + 3574646.

Almost surely, 2^1990922976 is an apocalyptic number.

1990922976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1990922976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3368878128).

1990922976 is an abundant number, since it is smaller than the sum of its proper divisors (4746833280).

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

1990922976 is a wasteful number, since it uses less digits than its factorization.

1990922976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The square root of 1990922976 is about 44619.7599276374. The cubic root of 1990922976 is about 1258.0121034488.

The spelling of 1990922976 in words is "one billion, nine hundred ninety million, nine hundred twenty-two thousand, nine hundred seventy-six".