18913130023 has 16 divisors (see below), whose sum is σ = 20129389056. Its totient is φ = 17732656480.

The previous prime is 18913129999. The next prime is 18913130051. The reversal of 18913130023 is 32003131981.

It is a cyclic number.

It is not a de Polignac number, because 18913130023 - 2²¹ = 18911032871 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 (18913130063) 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, 249036 + ... + 315982.

It is an arithmetic number, because the mean of its divisors is an integer number (1258086816).

Almost surely, 2^18913130023 is an apocalyptic number.

18913130023 is a deficient number, since it is larger than the sum of its proper divisors (1216259033).

18913130023 is a wasteful number, since it uses less digits than its factorization.

18913130023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67214.

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 18913130023 in words is "eighteen billion, nine hundred thirteen million, one hundred thirty thousand, twenty-three".