18083991023 has 16 divisors (see below), whose sum is σ = 20908419840. Its totient is φ = 15320760000.

The previous prime is 18083990999. The next prime is 18083991031. The reversal of 18083991023 is 32019938081.

It is not a de Polignac number, because 18083991023 - 2²⁴ = 18067213807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18083991223) 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, 190883 + ... + 269451.

It is an arithmetic number, because the mean of its divisors is an integer number (1306776240).

Almost surely, 2^18083991023 is an apocalyptic number.

18083991023 is a deficient number, since it is larger than the sum of its proper divisors (2824428817).

18083991023 is a wasteful number, since it uses less digits than its factorization.

18083991023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78958.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 18083991023 in words is "eighteen billion, eighty-three million, nine hundred ninety-one thousand, twenty-three".