2165913120 has 96 divisors (see below), whose sum is σ = 7797299328. Its totient is φ = 495065088.

The previous prime is 2165913119. The next prime is 2165913131. The reversal of 2165913120 is 213195612.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318949 + ... + 325668.

It is an arithmetic number, because the mean of its divisors is an integer number (81221868).

Almost surely, 2^2165913120 is an apocalyptic number.

2165913120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2165913120 is an abundant number, since it is smaller than the sum of its proper divisors (5631386208).

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

2165913120 is a wasteful number, since it uses less digits than its factorization.

2165913120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644642 (or 644634 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 2165913120 is about 46539.3717190080. The cubic root of 2165913120 is about 1293.8393161983.

The spelling of 2165913120 in words is "two billion, one hundred sixty-five million, nine hundred thirteen thousand, one hundred twenty".