2166554364 has 48 divisors (see below), whose sum is σ = 5500326048. Its totient is φ = 659755008.

The previous prime is 2166554309. The next prime is 2166554393. The reversal of 2166554364 is 4634556612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56457 + ... + 86720.

It is an arithmetic number, because the mean of its divisors is an integer number (114590126).

Almost surely, 2^2166554364 is an apocalyptic number.

It is an amenable number.

2166554364 is an abundant number, since it is smaller than the sum of its proper divisors (3333771684).

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

2166554364 is a wasteful number, since it uses less digits than its factorization.

2166554364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143294 (or 143292 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

The square root of 2166554364 is about 46546.2604727813. The cubic root of 2166554364 is about 1293.9669890378.

The spelling of 2166554364 in words is "two billion, one hundred sixty-six million, five hundred fifty-four thousand, three hundred sixty-four".