18425942157 has 32 divisors (see below), whose sum is σ = 28479965184. Its totient is φ = 10379304000.

The previous prime is 18425942153. The next prime is 18425942231. The reversal of 18425942157 is 75124952481.

It is not a de Polignac number, because 18425942157 - 2² = 18425942153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18425942153) 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 31 ways as a sum of consecutive naturals, for example, 393223 + ... + 437579.

It is an arithmetic number, because the mean of its divisors is an integer number (889998912).

Almost surely, 2^18425942157 is an apocalyptic number.

It is an amenable number.

18425942157 is a deficient number, since it is larger than the sum of its proper divisors (10054023027).

18425942157 is a wasteful number, since it uses less digits than its factorization.

18425942157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44649.

The product of its digits is 806400, while the sum is 48.

The spelling of 18425942157 in words is "eighteen billion, four hundred twenty-five million, nine hundred forty-two thousand, one hundred fifty-seven".