18039822234 has 16 divisors (see below), whose sum is σ = 41233879488. Its totient is φ = 5154234912.

The previous prime is 18039822209. The next prime is 18039822239. The reversal of 18039822234 is 43222893081.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 429519577 = 18039822234 / (1 + 8 + 0 + 3 + 9 + 8 + 2 + 2 + 2 + 3 + 4).

It is not an unprimeable number, because it can be changed into a prime (18039822239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214759747 + ... + 214759830.

It is an arithmetic number, because the mean of its divisors is an integer number (2577117468).

Almost surely, 2^18039822234 is an apocalyptic number.

18039822234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18039822234 is an abundant number, since it is smaller than the sum of its proper divisors (23194057254).

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

18039822234 is a wasteful number, since it uses less digits than its factorization.

18039822234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429519589.

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 18039822234 in words is "eighteen billion, thirty-nine million, eight hundred twenty-two thousand, two hundred thirty-four".