18884705216 has 56 divisors (see below), whose sum is σ = 40909945104. Its totient is φ = 8596592640.

The previous prime is 18884705183. The next prime is 18884705249. The reversal of 18884705216 is 61250748881.

It is an interprime number because it is at equal distance from previous prime (18884705183) and next prime (18884705249).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94730 + ... + 216201.

It is an arithmetic number, because the mean of its divisors is an integer number (730534734).

Almost surely, 2^18884705216 is an apocalyptic number.

18884705216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18884705216 is an abundant number, since it is smaller than the sum of its proper divisors (22025239888).

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

18884705216 is a wasteful number, since it uses less digits than its factorization.

18884705216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311029 (or 311019 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 50.

The spelling of 18884705216 in words is "eighteen billion, eight hundred eighty-four million, seven hundred five thousand, two hundred sixteen".