5638673508 has 72 divisors (see below), whose sum is σ = 14359661568. Its totient is φ = 1721236608.

The previous prime is 5638673501. The next prime is 5638673533. The reversal of 5638673508 is 8053768365.

It is not an unprimeable number, because it can be changed into a prime (5638673501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 246610 + ... + 268502.

It is an arithmetic number, because the mean of its divisors is an integer number (199439744).

Almost surely, 2^5638673508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5638673508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7179830784).

5638673508 is an abundant number, since it is smaller than the sum of its proper divisors (8720988060).

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

5638673508 is a wasteful number, since it uses less digits than its factorization.

5638673508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22053 (or 22038 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 51.

The square root of 5638673508 is about 75091.1013902446. The cubic root of 5638673508 is about 1779.8865293993.

The spelling of 5638673508 in words is "five billion, six hundred thirty-eight million, six hundred seventy-three thousand, five hundred eight".