2164265138 has 16 divisors (see below), whose sum is σ = 3928414464. Its totient is φ = 872980800.

The previous prime is 2164265113. The next prime is 2164265179. The reversal of 2164265138 is 8315624612.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4546538 + ... + 4547013.

It is an arithmetic number, because the mean of its divisors is an integer number (245525904).

Almost surely, 2^2164265138 is an apocalyptic number.

2164265138 is a deficient number, since it is larger than the sum of its proper divisors (1764149326).

2164265138 is a wasteful number, since it uses less digits than its factorization.

2164265138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9093577.

The product of its digits is 69120, while the sum is 38.

The square root of 2164265138 is about 46521.6631044076. The cubic root of 2164265138 is about 1293.5110843630.

The spelling of 2164265138 in words is "two billion, one hundred sixty-four million, two hundred sixty-five thousand, one hundred thirty-eight".