4644659690 has 32 divisors (see below), whose sum is σ = 9168215040. Its totient is φ = 1680116800.

The previous prime is 4644659683. The next prime is 4644659699. The reversal of 4644659690 is 969564464.

It is a super-2 number, since 2×4644659690² = 43145727271821792200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4644659699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89525 + ... + 131544.

It is an arithmetic number, because the mean of its divisors is an integer number (286506720).

Almost surely, 2^4644659690 is an apocalyptic number.

4644659690 is a deficient number, since it is larger than the sum of its proper divisors (4523555350).

4644659690 is a wasteful number, since it uses less digits than its factorization.

4644659690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221278.

The product of its (nonzero) digits is 5598720, while the sum is 53.

The square root of 4644659690 is about 68151.7401832118. The cubic root of 4644659690 is about 1668.4683256243.

The spelling of 4644659690 in words is "four billion, six hundred forty-four million, six hundred fifty-nine thousand, six hundred ninety".