18968923 has 8 divisors (see below), whose sum is σ = 20124720. Its totient is φ = 17817600.

The previous prime is 18968921. The next prime is 18968947. The reversal of 18968923 is 32986981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18968923 - 2¹ = 18968921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18968921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12348 + ... + 13798.

It is an arithmetic number, because the mean of its divisors is an integer number (2515590).

Almost surely, 2^18968923 is an apocalyptic number.

18968923 is a deficient number, since it is larger than the sum of its proper divisors (1155797).

18968923 is a wasteful number, since it uses less digits than its factorization.

18968923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237.

The product of its digits is 186624, while the sum is 46.

The square root of 18968923 is about 4355.3327083014. The cubic root of 18968923 is about 266.6946014139.

It can be divided in two parts, 18968 and 923, that added together give a palindrome (19891).

The spelling of 18968923 in words is "eighteen million, nine hundred sixty-eight thousand, nine hundred twenty-three".