18854363423 has 24 divisors (see below), whose sum is σ = 23403319920. Its totient is φ = 15100525440.

The previous prime is 18854363389. The next prime is 18854363441. The reversal of 18854363423 is 32436345881.

It is not a de Polignac number, because 18854363423 - 2²⁰ = 18853314847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18854363623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70748 + ... + 206673.

It is an arithmetic number, because the mean of its divisors is an integer number (975138330).

Almost surely, 2^18854363423 is an apocalyptic number.

18854363423 is a deficient number, since it is larger than the sum of its proper divisors (4548956497).

18854363423 is a wasteful number, since it uses less digits than its factorization.

18854363423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277527 (or 277520 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 47.

The spelling of 18854363423 in words is "eighteen billion, eight hundred fifty-four million, three hundred sixty-three thousand, four hundred twenty-three".