2045303645 has 32 divisors (see below), whose sum is σ = 3067303680. Its totient is φ = 1271946240.

The previous prime is 2045303639. The next prime is 2045303657. The reversal of 2045303645 is 5463035402.

It is not a de Polignac number, because 2045303645 - 2⁸ = 2045303389 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160571 + ... + 172839.

It is an arithmetic number, because the mean of its divisors is an integer number (95853240).

Almost surely, 2^2045303645 is an apocalyptic number.

It is an amenable number.

2045303645 is a deficient number, since it is larger than the sum of its proper divisors (1022000035).

2045303645 is a wasteful number, since it uses less digits than its factorization.

2045303645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12725.

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 2045303645 is about 45225.0333886002. The cubic root of 2045303645 is about 1269.3632795244.

The spelling of 2045303645 in words is "two billion, forty-five million, three hundred three thousand, six hundred forty-five".