18922489603 has 4 divisors (see below), whose sum is σ = 18925109368. Its totient is φ = 18919869840.

The previous prime is 18922489601. The next prime is 18922489613. The reversal of 18922489603 is 30698422981.

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

It is a cyclic number.

It is not a de Polignac number, because 18922489603 - 2¹ = 18922489601 is a prime.

It is a super-2 number, since 2×18922489603² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18922489601) 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, 1299018 + ... + 1313503.

It is an arithmetic number, because the mean of its divisors is an integer number (4731277342).

Almost surely, 2^18922489603 is an apocalyptic number.

18922489603 is a deficient number, since it is larger than the sum of its proper divisors (2619765).

18922489603 is an equidigital number, since it uses as much as digits as its factorization.

18922489603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619764.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The spelling of 18922489603 in words is "eighteen billion, nine hundred twenty-two million, four hundred eighty-nine thousand, six hundred three".