18869323 has 4 divisors (see below), whose sum is σ = 20584728. Its totient is φ = 17153920.

The previous prime is 18869311. The next prime is 18869329. The reversal of 18869323 is 32396881.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18869323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18869329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 857686 + ... + 857707.

It is an arithmetic number, because the mean of its divisors is an integer number (5146182).

Almost surely, 2^18869323 is an apocalyptic number.

18869323 is a deficient number, since it is larger than the sum of its proper divisors (1715405).

18869323 is a wasteful number, since it uses less digits than its factorization.

18869323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715404.

The product of its digits is 62208, while the sum is 40.

The square root of 18869323 is about 4343.8834008293. The cubic root of 18869323 is about 266.2270048542.

The spelling of 18869323 in words is "eighteen million, eight hundred sixty-nine thousand, three hundred twenty-three".