2180862432 has 72 divisors (see below), whose sum is σ = 7087809456. Its totient is φ = 623102976.

The previous prime is 2180862419. The next prime is 2180862443. The reversal of 2180862432 is 2342680812.

2180862432 is a `hidden beast` number, since 21 + 8 + 0 + 8 + 624 + 3 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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 11 ways as a sum of consecutive naturals, for example, 538873 + ... + 542904.

It is an arithmetic number, because the mean of its divisors is an integer number (98441798).

Almost surely, 2^2180862432 is an apocalyptic number.

It is an amenable number.

2180862432 is an abundant number, since it is smaller than the sum of its proper divisors (4906947024).

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

2180862432 is a wasteful number, since it uses less digits than its factorization.

2180862432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081800 (or 1081789 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 2180862432 is about 46699.7048384677. The cubic root of 2180862432 is about 1296.8092225540.

The spelling of 2180862432 in words is "two billion, one hundred eighty million, eight hundred sixty-two thousand, four hundred thirty-two".