4638656739 has 8 divisors (see below), whose sum is σ = 6269600272. Its totient is φ = 3050075520.

The previous prime is 4638656719. The next prime is 4638656741. The reversal of 4638656739 is 9376568364.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4638656739 - 2¹² = 4638652643 is a prime.

It is a super-2 number, since 2×4638656739² = 43034272684540228242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4638656719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10590322 + ... + 10590759.

It is an arithmetic number, because the mean of its divisors is an integer number (783700034).

Almost surely, 2^4638656739 is an apocalyptic number.

4638656739 is a deficient number, since it is larger than the sum of its proper divisors (1630943533).

4638656739 is a wasteful number, since it uses less digits than its factorization.

4638656739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21181157.

The product of its digits is 19595520, while the sum is 57.

The square root of 4638656739 is about 68107.6848747628. The cubic root of 4638656739 is about 1667.7492164904.

The spelling of 4638656739 in words is "four billion, six hundred thirty-eight million, six hundred fifty-six thousand, seven hundred thirty-nine".