2166082398 has 40 divisors (see below), whose sum is σ = 4972025520. Its totient is φ = 704414880.

The previous prime is 2166082397. The next prime is 2166082519. The reversal of 2166082398 is 8932806612.

2166082398 is a `hidden beast` number, since 2 + 1 + 6 + 608 + 2 + 39 + 8 = 666.

2166082398 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166082397) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 156418 + ... + 169701.

It is an arithmetic number, because the mean of its divisors is an integer number (124300638).

Almost surely, 2^2166082398 is an apocalyptic number.

2166082398 is an abundant number, since it is smaller than the sum of its proper divisors (2805943122).

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

2166082398 is a wasteful number, since it uses less digits than its factorization.

2166082398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326174 (or 326165 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 2166082398 is about 46541.1903371626. The cubic root of 2166082398 is about 1293.8730222019.

The spelling of 2166082398 in words is "two billion, one hundred sixty-six million, eighty-two thousand, three hundred ninety-eight".