18900940054 has 16 divisors (see below), whose sum is σ = 28564194960. Its totient is φ = 9379584000.

The previous prime is 18900940039. The next prime is 18900940129. The reversal of 18900940054 is 45004900981.

It is a junction number, because it is equal to n+sod(n) for n = 18900939989 and 18900940016.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1103782 + ... + 1120774.

It is an arithmetic number, because the mean of its divisors is an integer number (1785262185).

Almost surely, 2^18900940054 is an apocalyptic number.

18900940054 is a deficient number, since it is larger than the sum of its proper divisors (9663254906).

18900940054 is a wasteful number, since it uses less digits than its factorization.

18900940054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21135.

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 18900940054 in words is "eighteen billion, nine hundred million, nine hundred forty thousand, fifty-four".