1992992457 has 16 divisors (see below), whose sum is σ = 2731294080. Its totient is φ = 1291732992.

The previous prime is 1992992453. The next prime is 1992992471. The reversal of 1992992457 is 7542992991.

It is not a de Polignac number, because 1992992457 - 2² = 1992992453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1992992397 and 1992992406.

It is not an unprimeable number, because it can be changed into a prime (1992992453) 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 15 ways as a sum of consecutive naturals, for example, 150028 + ... + 162770.

It is an arithmetic number, because the mean of its divisors is an integer number (170705880).

Almost surely, 2^1992992457 is an apocalyptic number.

It is an amenable number.

1992992457 is a deficient number, since it is larger than the sum of its proper divisors (738301623).

1992992457 is a wasteful number, since it uses less digits than its factorization.

1992992457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14192.

The product of its digits is 3674160, while the sum is 57.

The square root of 1992992457 is about 44642.9440897439. The cubic root of 1992992457 is about 1258.4478361291.

The spelling of 1992992457 in words is "one billion, nine hundred ninety-two million, nine hundred ninety-two thousand, four hundred fifty-seven".