18774117224 has 32 divisors (see below), whose sum is σ = 35944299720. Its totient is φ = 9190849536.

The previous prime is 18774117217. The next prime is 18774117233. The reversal of 18774117224 is 42271147781.

It can be written as a sum of positive squares in 4 ways, for example, as 11085984100 + 7688133124 = 105290^2 + 87682^2 .

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, 37319 + ... + 197334.

Almost surely, 2^18774117224 is an apocalyptic number.

It is an amenable number.

18774117224 is a deficient number, since it is larger than the sum of its proper divisors (17170182496).

18774117224 is a wasteful number, since it uses less digits than its factorization.

18774117224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234869 (or 234865 counting only the distinct ones).

The product of its digits is 175616, while the sum is 44.

The spelling of 18774117224 in words is "eighteen billion, seven hundred seventy-four million, one hundred seventeen thousand, two hundred twenty-four".