2181053886 has 16 divisors (see below), whose sum is σ = 4758663168. Its totient is φ = 660925400.

The previous prime is 2181053873. The next prime is 2181053939. The reversal of 2181053886 is 6883501812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16523070 + ... + 16523201.

It is an arithmetic number, because the mean of its divisors is an integer number (297416448).

Almost surely, 2^2181053886 is an apocalyptic number.

2181053886 is an abundant number, since it is smaller than the sum of its proper divisors (2577609282).

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

2181053886 is a wasteful number, since it uses less digits than its factorization.

2181053886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33046287.

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 2181053886 is about 46701.7546351312. The cubic root of 2181053886 is about 1296.8471696285.

The spelling of 2181053886 in words is "two billion, one hundred eighty-one million, fifty-three thousand, eight hundred eighty-six".