18419316216 has 64 divisors (see below), whose sum is σ = 52637606400. Its totient is φ = 5261563008.

The previous prime is 18419316197. The next prime is 18419316229. The reversal of 18419316216 is 61261391481.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1138230 + ... + 1154298.

It is an arithmetic number, because the mean of its divisors is an integer number (822462600).

Almost surely, 2^18419316216 is an apocalyptic number.

It is an amenable number.

18419316216 is an abundant number, since it is smaller than the sum of its proper divisors (34218290184).

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

18419316216 is a wasteful number, since it uses less digits than its factorization.

18419316216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22908 (or 22904 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The spelling of 18419316216 in words is "eighteen billion, four hundred nineteen million, three hundred sixteen thousand, two hundred sixteen".