2176972245 has 72 divisors (see below), whose sum is σ = 4430990304. Its totient is φ = 985779648.

The previous prime is 2176972211. The next prime is 2176972249. The reversal of 2176972245 is 5422796712.

2176972245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2176972245 - 2⁶ = 2176972181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2176972245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2176972249) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 231322 + ... + 240548.

It is an arithmetic number, because the mean of its divisors is an integer number (61541532).

Almost surely, 2^2176972245 is an apocalyptic number.

It is an amenable number.

2176972245 is an abundant number, since it is smaller than the sum of its proper divisors (2254018059).

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

2176972245 is a wasteful number, since it uses less digits than its factorization.

2176972245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9359 (or 9349 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 2176972245 is about 46658.0351600879. The cubic root of 2176972245 is about 1296.0376878758.

The spelling of 2176972245 in words is "two billion, one hundred seventy-six million, nine hundred seventy-two thousand, two hundred forty-five".