4645391944 has 8 divisors (see below), whose sum is σ = 8710109910. Its totient is φ = 2322695968.

The previous prime is 4645391929. The next prime is 4645391951. The reversal of 4645391944 is 4491935464.

It can be written as a sum of positive squares in only one way, i.e., 2793122500 + 1852269444 = 52850^2 + 43038^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290336989 + ... + 290337004.

Almost surely, 2^4645391944 is an apocalyptic number.

It is an amenable number.

4645391944 is a deficient number, since it is larger than the sum of its proper divisors (4064717966).

4645391944 is a wasteful number, since it uses less digits than its factorization.

4645391944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580673999 (or 580673995 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 49.

The square root of 4645391944 is about 68157.1122040833. The cubic root of 4645391944 is about 1668.5560018294.

The spelling of 4645391944 in words is "four billion, six hundred forty-five million, three hundred ninety-one thousand, nine hundred forty-four".