18228158752 has 24 divisors (see below), whose sum is σ = 35897187312. Its totient is φ = 9111412800.

The previous prime is 18228158699. The next prime is 18228158779. The reversal of 18228158752 is 25785182281.

It is a super-2 number, since 2×18228158752² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18228158696 and 18228158705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30127 + ... + 193297.

It is an arithmetic number, because the mean of its divisors is an integer number (1495716138).

Almost surely, 2^18228158752 is an apocalyptic number.

It is an amenable number.

18228158752 is a deficient number, since it is larger than the sum of its proper divisors (17669028560).

18228158752 is a wasteful number, since it uses less digits than its factorization.

18228158752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166672 (or 166664 counting only the distinct ones).

The product of its digits is 716800, while the sum is 49.

The spelling of 18228158752 in words is "eighteen billion, two hundred twenty-eight million, one hundred fifty-eight thousand, seven hundred fifty-two".