2164715790 has 64 divisors (see below), whose sum is σ = 5501744640. Its totient is φ = 543576960.

The previous prime is 2164715789. The next prime is 2164715803. The reversal of 2164715790 is 975174612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83820 + ... + 106560.

It is an arithmetic number, because the mean of its divisors is an integer number (85964760).

Almost surely, 2^2164715790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2164715790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2750872320).

2164715790 is an abundant number, since it is smaller than the sum of its proper divisors (3337028850).

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

2164715790 is a wasteful number, since it uses less digits than its factorization.

2164715790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22937.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 2164715790 is about 46526.5063162924. The cubic root of 2164715790 is about 1293.6008581608.

The spelling of 2164715790 in words is "two billion, one hundred sixty-four million, seven hundred fifteen thousand, seven hundred ninety".