18619427124 has 24 divisors (see below), whose sum is σ = 48272589120. Its totient is φ = 6206475672.

The previous prime is 18619427117. The next prime is 18619427161. The reversal of 18619427124 is 42172491681.

18619427124 is a `hidden beast` number, since 1 + 8 + 619 + 4 + 2 + 7 + 1 + 24 = 666.

It is a super-2 number, since 2×18619427124² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18619427124.

It is a congruent number.

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, 86200944 + ... + 86201159.

It is an arithmetic number, because the mean of its divisors is an integer number (2011357880).

Almost surely, 2^18619427124 is an apocalyptic number.

It is an amenable number.

18619427124 is an abundant number, since it is smaller than the sum of its proper divisors (29653161996).

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

18619427124 is a wasteful number, since it uses less digits than its factorization.

18619427124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172402116 (or 172402108 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The spelling of 18619427124 in words is "eighteen billion, six hundred nineteen million, four hundred twenty-seven thousand, one hundred twenty-four".