18764923 has 8 divisors (see below), whose sum is σ = 19906992. Its totient is φ = 17627136.

The previous prime is 18764903. The next prime is 18764929. The reversal of 18764923 is 32946781.

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 18764923 - 2⁹ = 18764411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18764929) 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, 14811 + ... + 16027.

It is an arithmetic number, because the mean of its divisors is an integer number (2488374).

Almost surely, 2^18764923 is an apocalyptic number.

18764923 is a deficient number, since it is larger than the sum of its proper divisors (1142069).

18764923 is a wasteful number, since it uses less digits than its factorization.

18764923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141.

The product of its digits is 72576, while the sum is 40.

The square root of 18764923 is about 4331.8498358092. The cubic root of 18764923 is about 265.7351038449.

The spelling of 18764923 in words is "eighteen million, seven hundred sixty-four thousand, nine hundred twenty-three".