138182887 has 2 divisors, whose sum is σ = 138182888. Its totient is φ = 138182886.

The previous prime is 138182831. The next prime is 138182899. The reversal of 138182887 is 788281831.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138182887 - 2²³ = 129794279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138182287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69091443 + 69091444.

It is an arithmetic number, because the mean of its divisors is an integer number (69091444).

Almost surely, 2^138182887 is an apocalyptic number.

138182887 is a deficient number, since it is larger than the sum of its proper divisors (1).

138182887 is an equidigital number, since it uses as much as digits as its factorization.

138182887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172032, while the sum is 46.

The square root of 138182887 is about 11755.1217348014. The cubic root of 138182887 is about 516.9931084910.

The spelling of 138182887 in words is "one hundred thirty-eight million, one hundred eighty-two thousand, eight hundred eighty-seven".