8138343388 has 96 divisors (see below), whose sum is σ = 16842276864. Its totient is φ = 3369558528.

The previous prime is 8138343383. The next prime is 8138343401. The reversal of 8138343388 is 8833438318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8138343383) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 27775770 + ... + 27776062.

It is an arithmetic number, because the mean of its divisors is an integer number (175440384).

Almost surely, 2^8138343388 is an apocalyptic number.

It is an amenable number.

8138343388 is an abundant number, since it is smaller than the sum of its proper divisors (8703933476).

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

8138343388 is a wasteful number, since it uses less digits than its factorization.

8138343388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611 (or 609 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 49.

The square root of 8138343388 is about 90212.7673225913. The cubic root of 8138343388 is about 2011.4627923491.

The spelling of 8138343388 in words is "eight billion, one hundred thirty-eight million, three hundred forty-three thousand, three hundred eighty-eight".