18924092457 has 16 divisors (see below), whose sum is σ = 25470436992. Its totient is φ = 12497448960.

The previous prime is 18924092437. The next prime is 18924092519. The reversal of 18924092457 is 75429042981.

It is not a de Polignac number, because 18924092457 - 2¹⁵ = 18924059689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18924092437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71748 + ... + 207354.

It is an arithmetic number, because the mean of its divisors is an integer number (1591902312).

Almost surely, 2^18924092457 is an apocalyptic number.

It is an amenable number.

18924092457 is a deficient number, since it is larger than the sum of its proper divisors (6546344535).

18924092457 is a wasteful number, since it uses less digits than its factorization.

18924092457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136048.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 18924092457 in words is "eighteen billion, nine hundred twenty-four million, ninety-two thousand, four hundred fifty-seven".