2045816172 has 18 divisors (see below), whose sum is σ = 5171368748. Its totient is φ = 681938712.

The previous prime is 2045816131. The next prime is 2045816183. The reversal of 2045816172 is 2716185402.

2045816172 is a `hidden beast` number, since 2 + 0 + 4 + 581 + 6 + 1 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 56828227 = 2045816172 / (2 + 0 + 4 + 5 + 8 + 1 + 6 + 1 + 7 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28414078 + ... + 28414149.

Almost surely, 2^2045816172 is an apocalyptic number.

It is an amenable number.

2045816172 is an abundant number, since it is smaller than the sum of its proper divisors (3125552576).

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

2045816172 is a wasteful number, since it uses less digits than its factorization.

2045816172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56828237 (or 56828232 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 2045816172 is about 45230.6994418614. The cubic root of 2045816172 is about 1269.4692994170.

The spelling of 2045816172 in words is "two billion, forty-five million, eight hundred sixteen thousand, one hundred seventy-two".