4644138896 has 10 divisors (see below), whose sum is σ = 8998019142. Its totient is φ = 2322069440.

The previous prime is 4644138883. The next prime is 4644138899. The reversal of 4644138896 is 6988314464.

It can be written as a sum of positive squares in only one way, i.e., 4334378896 + 309760000 = 65836^2 + 17600^2 .

It is not an unprimeable number, because it can be changed into a prime (4644138899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145129325 + ... + 145129356.

Almost surely, 2^4644138896 is an apocalyptic number.

It is an amenable number.

4644138896 is a deficient number, since it is larger than the sum of its proper divisors (4353880246).

4644138896 is a wasteful number, since it uses less digits than its factorization.

4644138896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290258689 (or 290258683 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 53.

The square root of 4644138896 is about 68147.9192345592. The cubic root of 4644138896 is about 1668.4059629089.

The spelling of 4644138896 in words is "four billion, six hundred forty-four million, one hundred thirty-eight thousand, eight hundred ninety-six".