4644645644 has 6 divisors (see below), whose sum is σ = 8128129884. Its totient is φ = 2322322820.

The previous prime is 4644645637. The next prime is 4644645647. The reversal of 4644645644 is 4465464464.

It is not an unprimeable number, because it can be changed into a prime (4644645647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580580702 + ... + 580580709.

It is an arithmetic number, because the mean of its divisors is an integer number (1354688314).

Almost surely, 2^4644645644 is an apocalyptic number.

It is an amenable number.

4644645644 is a deficient number, since it is larger than the sum of its proper divisors (3483484240).

4644645644 is a wasteful number, since it uses less digits than its factorization.

4644645644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161161415 (or 1161161413 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 47.

The square root of 4644645644 is about 68151.6371336742. The cubic root of 4644645644 is about 1668.4666437408.

The spelling of 4644645644 in words is "four billion, six hundred forty-four million, six hundred forty-five thousand, six hundred forty-four".