7539498640 has 40 divisors (see below), whose sum is σ = 18560475000. Its totient is φ = 2838398976.

The previous prime is 7539498559. The next prime is 7539498683. The reversal of 7539498640 is 468949357.

It can be written as a sum of positive squares in 4 ways, for example, as 739187344 + 6800311296 = 27188^2 + 82464^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2770515 + ... + 2773234.

It is an arithmetic number, because the mean of its divisors is an integer number (464011875).

Almost surely, 2^7539498640 is an apocalyptic number.

It is an amenable number.

7539498640 is an abundant number, since it is smaller than the sum of its proper divisors (11020976360).

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

7539498640 is a wasteful number, since it uses less digits than its factorization.

7539498640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5543779 (or 5543773 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 55.

The square root of 7539498640 is about 86830.2864212712. The cubic root of 7539498640 is about 1960.8640713274.

The spelling of 7539498640 in words is "seven billion, five hundred thirty-nine million, four hundred ninety-eight thousand, six hundred forty".