1800790992 has 540 divisors, whose sum is σ = 7030344672. Its totient is φ = 417830400.

The previous prime is 1800790973. The next prime is 1800790993. The reversal of 1800790992 is 2990970081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800790993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 58090017 + ... + 58090047.

Almost surely, 2^1800790992 is an apocalyptic number.

1800790992 is a gapful number since it is divisible by the number (12) 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 1800790992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3515172336).

1800790992 is an abundant number, since it is smaller than the sum of its proper divisors (5229553680).

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

1800790992 is a wasteful number, since it uses less digits than its factorization.

1800790992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 1800790992 is about 42435.7277774283. The cubic root of 1800790992 is about 1216.6185572103.

The spelling of 1800790992 in words is "one billion, eight hundred million, seven hundred ninety thousand, nine hundred ninety-two".