8138099508 has 48 divisors (see below), whose sum is σ = 23674473984. Its totient is φ = 2113791840.

The previous prime is 8138099503. The next prime is 8138099521. The reversal of 8138099508 is 8059908318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8138099503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4402810 + ... + 4404657.

It is an arithmetic number, because the mean of its divisors is an integer number (493218208).

Almost surely, 2^8138099508 is an apocalyptic number.

It is an amenable number.

8138099508 is an abundant number, since it is smaller than the sum of its proper divisors (15536374476).

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

8138099508 is a wasteful number, since it uses less digits than its factorization.

8138099508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8807492 (or 8807490 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 51.

The square root of 8138099508 is about 90211.4156190889. The cubic root of 8138099508 is about 2011.4426997896.

The spelling of 8138099508 in words is "eight billion, one hundred thirty-eight million, ninety-nine thousand, five hundred eight".