138532367 has 2 divisors, whose sum is σ = 138532368. Its totient is φ = 138532366.

The previous prime is 138532313. The next prime is 138532411. The reversal of 138532367 is 763235831.

It is a strong prime.

It is an emirp because it is prime and its reverse (763235831) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138532367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138532367.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138532067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69266183 + 69266184.

It is an arithmetic number, because the mean of its divisors is an integer number (69266184).

Almost surely, 2^138532367 is an apocalyptic number.

138532367 is a deficient number, since it is larger than the sum of its proper divisors (1).

138532367 is an equidigital number, since it uses as much as digits as its factorization.

138532367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 38.

The square root of 138532367 is about 11769.9773576673. The cubic root of 138532367 is about 517.4285860676.

The spelling of 138532367 in words is "one hundred thirty-eight million, five hundred thirty-two thousand, three hundred sixty-seven".