18213359228 has 12 divisors (see below), whose sum is σ = 31882025952. Its totient is φ = 9104208960.

The previous prime is 18213359191. The next prime is 18213359231. The reversal of 18213359228 is 82295331281.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 601028 + ... + 630603.

It is an arithmetic number, because the mean of its divisors is an integer number (2656835496).

Almost surely, 2^18213359228 is an apocalyptic number.

It is an amenable number.

18213359228 is a deficient number, since it is larger than the sum of its proper divisors (13668666724).

18213359228 is a wasteful number, since it uses less digits than its factorization.

18213359228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235332 (or 1235330 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The spelling of 18213359228 in words is "eighteen billion, two hundred thirteen million, three hundred fifty-nine thousand, two hundred twenty-eight".