2045417172 has 12 divisors (see below), whose sum is σ = 4772640096. Its totient is φ = 681805720.

The previous prime is 2045417167. The next prime is 2045417173. The reversal of 2045417172 is 2717145402.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) 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 (2045417173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85225704 + ... + 85225727.

It is an arithmetic number, because the mean of its divisors is an integer number (397720008).

Almost surely, 2^2045417172 is an apocalyptic number.

It is an amenable number.

2045417172 is an abundant number, since it is smaller than the sum of its proper divisors (2727222924).

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

2045417172 is a wasteful number, since it uses less digits than its factorization.

2045417172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170451438 (or 170451436 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 2045417172 is about 45226.2885056910. The cubic root of 2045417172 is about 1269.3867649270.

The spelling of 2045417172 in words is "two billion, forty-five million, four hundred seventeen thousand, one hundred seventy-two".