18122789424 has 40 divisors (see below), whose sum is σ = 47174605632. Its totient is φ = 5994813760.

The previous prime is 18122789411. The next prime is 18122789467. The reversal of 18122789424 is 42498722181.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1434774 + ... + 1447349.

Almost surely, 2^18122789424 is an apocalyptic number.

It is an amenable number.

18122789424 is an abundant number, since it is smaller than the sum of its proper divisors (29051816208).

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

18122789424 is a wasteful number, since it uses less digits than its factorization.

18122789424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2882265 (or 2882259 counting only the distinct ones).

The product of its digits is 516096, while the sum is 48.

The spelling of 18122789424 in words is "eighteen billion, one hundred twenty-two million, seven hundred eighty-nine thousand, four hundred twenty-four".