18690234055 has 16 divisors (see below), whose sum is σ = 22570712064. Its totient is φ = 14857332480.

The previous prime is 18690234053. The next prime is 18690234067. The reversal of 18690234055 is 55043209681.

It is not a de Polignac number, because 18690234055 - 2¹ = 18690234053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18690234053) 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, 1843450 + ... + 1853560.

It is an arithmetic number, because the mean of its divisors is an integer number (1410669504).

Almost surely, 2^18690234055 is an apocalyptic number.

18690234055 is a deficient number, since it is larger than the sum of its proper divisors (3880478009).

18690234055 is a wasteful number, since it uses less digits than its factorization.

18690234055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12426.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 18690234055 in words is "eighteen billion, six hundred ninety million, two hundred thirty-four thousand, fifty-five".