16818504234 has 16 divisors (see below), whose sum is σ = 38442295488. Its totient is φ = 4805286912.

The previous prime is 16818504203. The next prime is 16818504239. The reversal of 16818504234 is 43240581861.

It is a happy number.

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: 400440577 = 16818504234 / (1 + 6 + 8 + 1 + 8 + 5 + 0 + 4 + 2 + 3 + 4).

It is not an unprimeable number, because it can be changed into a prime (16818504239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200220247 + ... + 200220330.

It is an arithmetic number, because the mean of its divisors is an integer number (2402643468).

Almost surely, 2^16818504234 is an apocalyptic number.

16818504234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16818504234 is an abundant number, since it is smaller than the sum of its proper divisors (21623791254).

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

16818504234 is a wasteful number, since it uses less digits than its factorization.

16818504234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400440589.

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 16818504234 in words is "sixteen billion, eight hundred eighteen million, five hundred four thousand, two hundred thirty-four".