18484437216 has 96 divisors (see below), whose sum is σ = 55529445888. Its totient is φ = 5274017280.

The previous prime is 18484437187. The next prime is 18484437227. The reversal of 18484437216 is 61273448481.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480786 + ... + 517806.

It is an arithmetic number, because the mean of its divisors is an integer number (578431728).

Almost surely, 2^18484437216 is an apocalyptic number.

18484437216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18484437216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27764722944).

18484437216 is an abundant number, since it is smaller than the sum of its proper divisors (37045008672).

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

18484437216 is a wasteful number, since it uses less digits than its factorization.

18484437216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37784 (or 37776 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 48.

The spelling of 18484437216 in words is "eighteen billion, four hundred eighty-four million, four hundred thirty-seven thousand, two hundred sixteen".