8138238111 has 6 divisors (see below), whose sum is σ = 11755232840. Its totient is φ = 5425492068.

The previous prime is 8138238107. The next prime is 8138238127. The reversal of 8138238111 is 1118328318.

It is not a de Polignac number, because 8138238111 - 2² = 8138238107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8138238161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 452124331 + ... + 452124348.

Almost surely, 2^8138238111 is an apocalyptic number.

8138238111 is a deficient number, since it is larger than the sum of its proper divisors (3616994729).

8138238111 is a wasteful number, since it uses less digits than its factorization.

8138238111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904248685 (or 904248682 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The square root of 8138238111 is about 90212.1838279065. The cubic root of 8138238111 is about 2011.4541189344.

The spelling of 8138238111 in words is "eight billion, one hundred thirty-eight million, two hundred thirty-eight thousand, one hundred eleven".