7489888644 has 48 divisors (see below), whose sum is σ = 19986326528. Its totient is φ = 2138544288.

The previous prime is 7489888639. The next prime is 7489888657. The reversal of 7489888644 is 4468889847.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100719 + ... + 158505.

Almost surely, 2^7489888644 is an apocalyptic number.

It is an amenable number.

7489888644 is an abundant number, since it is smaller than the sum of its proper divisors (12496437884).

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

7489888644 is a wasteful number, since it uses less digits than its factorization.

7489888644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59344 (or 59342 counting only the distinct ones).

The product of its digits is 99090432, while the sum is 66.

The square root of 7489888644 is about 86544.1427480797. The cubic root of 7489888644 is about 1956.5537667439.

The spelling of 7489888644 in words is "seven billion, four hundred eighty-nine million, eight hundred eighty-eight thousand, six hundred forty-four".