2175418872 has 96 divisors (see below), whose sum is σ = 6805496880. Its totient is φ = 620436480.

The previous prime is 2175418859. The next prime is 2175418873. The reversal of 2175418872 is 2788145712.

2175418872 is a `hidden beast` number, since 21 + 7 + 541 + 8 + 87 + 2 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2175418873) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 67323 + ... + 94250.

Almost surely, 2^2175418872 is an apocalyptic number.

2175418872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2175418872 is an abundant number, since it is smaller than the sum of its proper divisors (4630078008).

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

2175418872 is a wasteful number, since it uses less digits than its factorization.

2175418872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161613 (or 161606 counting only the distinct ones).

The product of its digits is 250880, while the sum is 45.

The square root of 2175418872 is about 46641.3858284678. The cubic root of 2175418872 is about 1295.7293530634.

The spelling of 2175418872 in words is "two billion, one hundred seventy-five million, four hundred eighteen thousand, eight hundred seventy-two".