2045655745 has 32 divisors (see below), whose sum is σ = 2900330496. Its totient is φ = 1355443200.

The previous prime is 2045655743. The next prime is 2045655749. The reversal of 2045655745 is 5475565402.

It is not a de Polignac number, because 2045655745 - 2¹ = 2045655743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2045655743) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1150297 + ... + 1152073.

It is an arithmetic number, because the mean of its divisors is an integer number (90635328).

Almost surely, 2^2045655745 is an apocalyptic number.

It is an amenable number.

2045655745 is a deficient number, since it is larger than the sum of its proper divisors (854674751).

2045655745 is a wasteful number, since it uses less digits than its factorization.

2045655745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2881.

The product of its (nonzero) digits is 840000, while the sum is 43.

The square root of 2045655745 is about 45228.9259766358. The cubic root of 2045655745 is about 1269.4361158434.

The spelling of 2045655745 in words is "two billion, forty-five million, six hundred fifty-five thousand, seven hundred forty-five".