2118355164 has 18 divisors (see below), whose sum is σ = 5354731200. Its totient is φ = 706118376.

The previous prime is 2118355153. The next prime is 2118355181. The reversal of 2118355164 is 4615538112.

2118355164 is a `hidden beast` number, since 21 + 1 + 83 + 551 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 58843199 = 2118355164 / (2 + 1 + 1 + 8 + 3 + 5 + 5 + 1 + 6 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29421564 + ... + 29421635.

Almost surely, 2^2118355164 is an apocalyptic number.

It is an amenable number.

2118355164 is an abundant number, since it is smaller than the sum of its proper divisors (3236376036).

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

2118355164 is a wasteful number, since it uses less digits than its factorization.

2118355164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58843209 (or 58843204 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 2118355164 is about 46025.5924893966. The cubic root of 2118355164 is about 1284.2993377276.

The spelling of 2118355164 in words is "two billion, one hundred eighteen million, three hundred fifty-five thousand, one hundred sixty-four".