4645640444 has 12 divisors (see below), whose sum is σ = 8131676784. Its totient is φ = 2322304224.

The previous prime is 4645640437. The next prime is 4645640459. The reversal of 4645640444 is 4440465464.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108377 + ... + 145040.

It is an arithmetic number, because the mean of its divisors is an integer number (677639732).

Almost surely, 2^4645640444 is an apocalyptic number.

It is an amenable number.

4645640444 is a deficient number, since it is larger than the sum of its proper divisors (3486036340).

4645640444 is a wasteful number, since it uses less digits than its factorization.

4645640444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258004 (or 258002 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 41.

The square root of 4645640444 is about 68158.9351736073. The cubic root of 4645640444 is about 1668.5857538057.

The spelling of 4645640444 in words is "four billion, six hundred forty-five million, six hundred forty thousand, four hundred forty-four".