18954208392 has 64 divisors (see below), whose sum is σ = 55414318080. Its totient is φ = 5289544512.

The previous prime is 18954208379. The next prime is 18954208393. The reversal of 18954208392 is 29380245981.

It is not an unprimeable number, because it can be changed into a prime (18954208393) 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, 1304668 + ... + 1319115.

It is an arithmetic number, because the mean of its divisors is an integer number (865848720).

Almost surely, 2^18954208392 is an apocalyptic number.

18954208392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18954208392 is an abundant number, since it is smaller than the sum of its proper divisors (36460109688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18954208392 is a wasteful number, since it uses less digits than its factorization.

18954208392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623842 (or 2623838 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 18954208392 in words is "eighteen billion, nine hundred fifty-four million, two hundred eight thousand, three hundred ninety-two".