18279228832 has 12 divisors (see below), whose sum is σ = 35987231826. Its totient is φ = 9139614400.

The previous prime is 18279228811. The next prime is 18279228839. The reversal of 18279228832 is 23882297281.

It can be written as a sum of positive squares in only one way, i.e., 17741174416 + 538054416 = 133196^2 + 23196^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18279228832.

It is not an unprimeable number, because it can be changed into a prime (18279228839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285612919 + ... + 285612982.

Almost surely, 2^18279228832 is an apocalyptic number.

It is an amenable number.

18279228832 is a deficient number, since it is larger than the sum of its proper divisors (17708002994).

18279228832 is an equidigital number, since it uses as much as digits as its factorization.

18279228832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571225911 (or 571225903 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 52.

The spelling of 18279228832 in words is "eighteen billion, two hundred seventy-nine million, two hundred twenty-eight thousand, eight hundred thirty-two".