2180018512 has 20 divisors (see below), whose sum is σ = 4827184096. Its totient is φ = 934293600.

The previous prime is 2180018507. The next prime is 2180018527. The reversal of 2180018512 is 2158100812.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9732114 + ... + 9732337.

Almost surely, 2^2180018512 is an apocalyptic number.

It is an amenable number.

2180018512 is an abundant number, since it is smaller than the sum of its proper divisors (2647165584).

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

2180018512 is a wasteful number, since it uses less digits than its factorization.

2180018512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19464466 (or 19464460 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 28.

The square root of 2180018512 is about 46690.6683610333. The cubic root of 2180018512 is about 1296.6419272034.

The spelling of 2180018512 in words is "two billion, one hundred eighty million, eighteen thousand, five hundred twelve".