2165167164 has 24 divisors (see below), whose sum is σ = 5072191488. Its totient is φ = 718846000.

The previous prime is 2165167159. The next prime is 2165167187. The reversal of 2165167164 is 4617615612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356412 + ... + 362435.

It is an arithmetic number, because the mean of its divisors is an integer number (211341312).

Almost surely, 2^2165167164 is an apocalyptic number.

It is an amenable number.

2165167164 is an abundant number, since it is smaller than the sum of its proper divisors (2907024324).

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

2165167164 is a wasteful number, since it uses less digits than its factorization.

2165167164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719105 (or 719103 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 2165167164 is about 46531.3567822818. The cubic root of 2165167164 is about 1293.6907632987.

The spelling of 2165167164 in words is "two billion, one hundred sixty-five million, one hundred sixty-seven thousand, one hundred sixty-four".