18804192897 has 48 divisors (see below), whose sum is σ = 30481170432. Its totient is φ = 10099041120.

The previous prime is 18804192893. The next prime is 18804192943. The reversal of 18804192897 is 79829140881.

It is not a de Polignac number, because 18804192897 - 2² = 18804192893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (18804192893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 953022 + ... + 972552.

It is an arithmetic number, because the mean of its divisors is an integer number (635024384).

Almost surely, 2^18804192897 is an apocalyptic number.

It is an amenable number.

18804192897 is a deficient number, since it is larger than the sum of its proper divisors (11676977535).

18804192897 is a wasteful number, since it uses less digits than its factorization.

18804192897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19706 (or 19687 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 57.

The spelling of 18804192897 in words is "eighteen billion, eight hundred four million, one hundred ninety-two thousand, eight hundred ninety-seven".