8138111 has 2 divisors, whose sum is σ = 8138112. Its totient is φ = 8138110.

The previous prime is 8138107. The next prime is 8138129. The reversal of 8138111 is 1118318.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8138111 - 2² = 8138107 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8131111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4069055 + 4069056.

It is an arithmetic number, because the mean of its divisors is an integer number (4069056).

Almost surely, 2^8138111 is an apocalyptic number.

8138111 is a deficient number, since it is larger than the sum of its proper divisors (1).

8138111 is an equidigital number, since it uses as much as digits as its factorization.

8138111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 23.

The square root of 8138111 is about 2852.7374572505. The cubic root of 8138111 is about 201.1443646591.

The spelling of 8138111 in words is "eight million, one hundred thirty-eight thousand, one hundred eleven".