2166554363 has 4 divisors (see below), whose sum is σ = 2280583560. Its totient is φ = 2052525168.

The previous prime is 2166554309. The next prime is 2166554393. The reversal of 2166554363 is 3634556612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2166554363 - 2⁸ = 2166554107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2166554363.

It is not an unprimeable number, because it can be changed into a prime (2166554303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57014570 + ... + 57014607.

It is an arithmetic number, because the mean of its divisors is an integer number (570145890).

Almost surely, 2^2166554363 is an apocalyptic number.

2166554363 is a deficient number, since it is larger than the sum of its proper divisors (114029197).

2166554363 is a wasteful number, since it uses less digits than its factorization.

2166554363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114029196.

The product of its digits is 388800, while the sum is 41.

The square root of 2166554363 is about 46546.2604620393. The cubic root of 2166554363 is about 1293.9669888388.

The spelling of 2166554363 in words is "two billion, one hundred sixty-six million, five hundred fifty-four thousand, three hundred sixty-three".