2045133644 has 24 divisors (see below), whose sum is σ = 3622936128. Its totient is φ = 1010050560.

The previous prime is 2045133613. The next prime is 2045133667. The reversal of 2045133644 is 4463315402.

It is a self number, because there is not a number n which added to its sum of digits gives 2045133644.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205037 + ... + 214779.

It is an arithmetic number, because the mean of its divisors is an integer number (150955672).

Almost surely, 2^2045133644 is an apocalyptic number.

It is an amenable number.

2045133644 is a deficient number, since it is larger than the sum of its proper divisors (1577802484).

2045133644 is a wasteful number, since it uses less digits than its factorization.

2045133644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10385 (or 10383 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 2045133644 is about 45223.1538484436. The cubic root of 2045133644 is about 1269.3281096844.

The spelling of 2045133644 in words is "two billion, forty-five million, one hundred thirty-three thousand, six hundred forty-four".