138387133 has 2 divisors, whose sum is σ = 138387134. Its totient is φ = 138387132.

The previous prime is 138387107. The next prime is 138387143. The reversal of 138387133 is 331783831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106543684 + 31843449 = 10322^2 + 5643^2 .

It is a cyclic number.

It is not a de Polignac number, because 138387133 - 2¹³ = 138378941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138387092 and 138387101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138387143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69193566 + 69193567.

It is an arithmetic number, because the mean of its divisors is an integer number (69193567).

Almost surely, 2^138387133 is an apocalyptic number.

It is an amenable number.

138387133 is a deficient number, since it is larger than the sum of its proper divisors (1).

138387133 is an equidigital number, since it uses as much as digits as its factorization.

138387133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 138387133 is about 11763.8060592650. The cubic root of 138387133 is about 517.2477029488.

The spelling of 138387133 in words is "one hundred thirty-eight million, three hundred eighty-seven thousand, one hundred thirty-three".