4651538688 has 54 divisors (see below), whose sum is σ = 13411539414. Its totient is φ = 1550512128.

The previous prime is 4651538681. The next prime is 4651538737. The reversal of 4651538688 is 8868351564.

4651538688 is a `hidden beast` number, since 46 + 5 + 1 + 538 + 68 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3681091584 + 970447104 = 60672^2 + 31152^2 .

It is a super-2 number, since 2×4651538688² = 43273624331921522688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4651538681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1007145 + ... + 1011752.

It is an arithmetic number, because the mean of its divisors is an integer number (248361841).

Almost surely, 2^4651538688 is an apocalyptic number.

4651538688 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4651538688 is an abundant number, since it is smaller than the sum of its proper divisors (8760000726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4651538688 is a wasteful number, since it uses less digits than its factorization.

4651538688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018919 (or 2018902 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 54.

The square root of 4651538688 is about 68202.1897595671. The cubic root of 4651538688 is about 1669.2916172812.

The spelling of 4651538688 in words is "four billion, six hundred fifty-one million, five hundred thirty-eight thousand, six hundred eighty-eight".