1992397800 has 48 divisors (see below), whose sum is σ = 6176435040. Its totient is φ = 531305920.

The previous prime is 1992397769. The next prime is 1992397831. The reversal of 1992397800 is 87932991.

1992397800 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1992397769) and next prime (1992397831).

It is a self number, because there is not a number n which added to its sum of digits gives 1992397800.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1659732 + ... + 1660931.

It is an arithmetic number, because the mean of its divisors is an integer number (128675730).

Almost surely, 2^1992397800 is an apocalyptic number.

1992397800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1992397800 is an abundant number, since it is smaller than the sum of its proper divisors (4184037240).

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

1992397800 is a wasteful number, since it uses less digits than its factorization.

1992397800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320682 (or 3320673 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 1992397800 is about 44636.2834474377. The cubic root of 1992397800 is about 1258.3226610013.

The spelling of 1992397800 in words is "one billion, nine hundred ninety-two million, three hundred ninety-seven thousand, eight hundred".