2180166912 has 216 divisors, whose sum is σ = 7837677120. Its totient is φ = 566231040.

The previous prime is 2180166869. The next prime is 2180166943. The reversal of 2180166912 is 2196610812.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171264 + ... + 183552.

Almost surely, 2^2180166912 is an apocalyptic number.

2180166912 is a gapful number since it is divisible by the number (22) 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 2180166912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3918838560).

2180166912 is an abundant number, since it is smaller than the sum of its proper divisors (5657510208).

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

2180166912 is a wasteful number, since it uses less digits than its factorization.

2180166912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12329 (or 12312 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 2180166912 is about 46692.2575166376. The cubic root of 2180166912 is about 1296.6713485585.

The spelling of 2180166912 in words is "two billion, one hundred eighty million, one hundred sixty-six thousand, nine hundred twelve".