2175090912 has 72 divisors (see below), whose sum is σ = 6230676816. Its totient is φ = 719725056.

The previous prime is 2175090871. The next prime is 2175090919. The reversal of 2175090912 is 2190905712.

It is a tau number, because it is divible by the number of its divisors (72).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2175090919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11893 + ... + 67019.

It is an arithmetic number, because the mean of its divisors is an integer number (86537178).

Almost surely, 2^2175090912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2175090912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3115338408).

2175090912 is an abundant number, since it is smaller than the sum of its proper divisors (4055585904).

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

2175090912 is a wasteful number, since it uses less digits than its factorization.

2175090912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55280 (or 55269 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 2175090912 is about 46637.8699342069. The cubic root of 2175090912 is about 1295.6642362928.

The spelling of 2175090912 in words is "two billion, one hundred seventy-five million, ninety thousand, nine hundred twelve".