18434500836 has 48 divisors (see below), whose sum is σ = 43203978048. Its totient is φ = 6117724800.

The previous prime is 18434500831. The next prime is 18434500879. The reversal of 18434500836 is 63800543481.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18434500831) 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 in 15 ways as a sum of consecutive naturals, for example, 3258186 + ... + 3263838.

It is an arithmetic number, because the mean of its divisors is an integer number (900082876).

Almost surely, 2^18434500836 is an apocalyptic number.

It is an amenable number.

18434500836 is an abundant number, since it is smaller than the sum of its proper divisors (24769477212).

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

18434500836 is a wasteful number, since it uses less digits than its factorization.

18434500836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6812 (or 6810 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 18434500836 in words is "eighteen billion, four hundred thirty-four million, five hundred thousand, eight hundred thirty-six".