138110887 has 2 divisors, whose sum is σ = 138110888. Its totient is φ = 138110886.

The previous prime is 138110857. The next prime is 138110891. The reversal of 138110887 is 788011831.

It is a strong prime.

It is an emirp because it is prime and its reverse (788011831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138110887 - 2²⁷ = 3893159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138110807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69055443 + 69055444.

It is an arithmetic number, because the mean of its divisors is an integer number (69055444).

Almost surely, 2^138110887 is an apocalyptic number.

138110887 is a deficient number, since it is larger than the sum of its proper divisors (1).

138110887 is an equidigital number, since it uses as much as digits as its factorization.

138110887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 37.

The square root of 138110887 is about 11752.0588409010. The cubic root of 138110887 is about 516.9033000456.

The spelling of 138110887 in words is "one hundred thirty-eight million, one hundred ten thousand, eight hundred eighty-seven".