138764383 has 2 divisors, whose sum is σ = 138764384. Its totient is φ = 138764382.

The previous prime is 138764371. The next prime is 138764389. The reversal of 138764383 is 383467831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138764383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138764389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69382191 + 69382192.

It is an arithmetic number, because the mean of its divisors is an integer number (69382192).

Almost surely, 2^138764383 is an apocalyptic number.

138764383 is a deficient number, since it is larger than the sum of its proper divisors (1).

138764383 is an equidigital number, since it uses as much as digits as its factorization.

138764383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 43.

The square root of 138764383 is about 11779.8294979172. The cubic root of 138764383 is about 517.7172905638.

The spelling of 138764383 in words is "one hundred thirty-eight million, seven hundred sixty-four thousand, three hundred eighty-three".