138059837 has 2 divisors, whose sum is σ = 138059838. Its totient is φ = 138059836.

The previous prime is 138059813. The next prime is 138059843. The reversal of 138059837 is 738950831.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85729081 + 52330756 = 9259^2 + 7234^2 .

It is a cyclic number.

It is not a de Polignac number, because 138059837 - 2⁶ = 138059773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138059137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69029918 + 69029919.

It is an arithmetic number, because the mean of its divisors is an integer number (69029919).

Almost surely, 2^138059837 is an apocalyptic number.

It is an amenable number.

138059837 is a deficient number, since it is larger than the sum of its proper divisors (1).

138059837 is an equidigital number, since it uses as much as digits as its factorization.

138059837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 138059837 is about 11749.8866803046. The cubic root of 138059837 is about 516.8396044506.

The spelling of 138059837 in words is "one hundred thirty-eight million, fifty-nine thousand, eight hundred thirty-seven".