1992497864 has 32 divisors (see below), whose sum is σ = 4288811520. Its totient is φ = 850093056.

The previous prime is 1992497849. The next prime is 1992497891. The reversal of 1992497864 is 4687942991.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67289 + ... + 92264.

It is an arithmetic number, because the mean of its divisors is an integer number (134025360).

Almost surely, 2^1992497864 is an apocalyptic number.

1992497864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1992497864 is an abundant number, since it is smaller than the sum of its proper divisors (2296313656).

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

1992497864 is a wasteful number, since it uses less digits than its factorization.

1992497864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159789 (or 159785 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 59.

The square root of 1992497864 is about 44637.4043152153. The cubic root of 1992497864 is about 1258.3437261874.

The spelling of 1992497864 in words is "one billion, nine hundred ninety-two million, four hundred ninety-seven thousand, eight hundred sixty-four".