18942559365 has 16 divisors (see below), whose sum is σ = 30348470016. Its totient is φ = 10089240000.

The previous prime is 18942559357. The next prime is 18942559369. The reversal of 18942559365 is 56395524981.

It is a happy number.

It is not a de Polignac number, because 18942559365 - 2³ = 18942559357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18942559369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 829506 + ... + 852035.

It is an arithmetic number, because the mean of its divisors is an integer number (1896779376).

Almost surely, 2^18942559365 is an apocalyptic number.

18942559365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18942559365 is a deficient number, since it is larger than the sum of its proper divisors (11405910651).

18942559365 is a wasteful number, since it uses less digits than its factorization.

18942559365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682300.

The product of its digits is 11664000, while the sum is 57.

The spelling of 18942559365 in words is "eighteen billion, nine hundred forty-two million, five hundred fifty-nine thousand, three hundred sixty-five".