8133838893 has 12 divisors (see below), whose sum is σ = 11749699260. Its totient is φ = 5422180416.

The previous prime is 8133838883. The next prime is 8133838907. The reversal of 8133838893 is 3988383318.

It can be written as a sum of positive squares in 2 ways, for example, as 8118370404 + 15468489 = 90102^2 + 3933^2 .

It is not a de Polignac number, because 8133838893 - 2⁵ = 8133838861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8133838883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176755 + ... + 217967.

It is an arithmetic number, because the mean of its divisors is an integer number (979141605).

Almost surely, 2^8133838893 is an apocalyptic number.

It is an amenable number.

8133838893 is a deficient number, since it is larger than the sum of its proper divisors (3615860367).

8133838893 is a wasteful number, since it uses less digits than its factorization.

8133838893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63148 (or 63145 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 8133838893 is about 90187.7979163479. The cubic root of 8133838893 is about 2011.0916154060.

The spelling of 8133838893 in words is "eight billion, one hundred thirty-three million, eight hundred thirty-eight thousand, eight hundred ninety-three".