18228776424 has 32 divisors (see below), whose sum is σ = 45698904000. Its totient is φ = 6059330432.

The previous prime is 18228776417. The next prime is 18228776483. The reversal of 18228776424 is 42467782281.

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, 1049229 + ... + 1066460.

It is an arithmetic number, because the mean of its divisors is an integer number (1428090750).

Almost surely, 2^18228776424 is an apocalyptic number.

It is an amenable number.

18228776424 is an abundant number, since it is smaller than the sum of its proper divisors (27470127576).

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

18228776424 is a wasteful number, since it uses less digits than its factorization.

18228776424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116057 (or 2116053 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 51.

The spelling of 18228776424 in words is "eighteen billion, two hundred twenty-eight million, seven hundred seventy-six thousand, four hundred twenty-four".