8890808138 has 12 divisors (see below), whose sum is σ = 14166842262. Its totient is φ = 4183909440.

The previous prime is 8890808137. The next prime is 8890808177. The reversal of 8890808138 is 8318080988.

It can be written as a sum of positive squares in 3 ways, for example, as 7292647609 + 1598160529 = 85397^2 + 39977^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8890808138.

It is not an unprimeable number, because it can be changed into a prime (8890808137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7690433 + ... + 7691588.

Almost surely, 2^8890808138 is an apocalyptic number.

8890808138 is a deficient number, since it is larger than the sum of its proper divisors (5276034124).

8890808138 is a wasteful number, since it uses less digits than its factorization.

8890808138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15382057 (or 15382040 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 53.

The square root of 8890808138 is about 94291.0819643088. The cubic root of 8890808138 is about 2071.6374154043.

The spelling of 8890808138 in words is "eight billion, eight hundred ninety million, eight hundred eight thousand, one hundred thirty-eight".