138763 has 2 divisors, whose sum is σ = 138764. Its totient is φ = 138762.

The previous prime is 138739. The next prime is 138793. The reversal of 138763 is 367831.

It is a weak prime.

It is an emirp because it is prime and its reverse (367831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138763 - 2⁵ = 138731 is a prime.

It is not a weakly prime, because it can be changed into another prime (138793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69381 + 69382.

It is an arithmetic number, because the mean of its divisors is an integer number (69382).

2¹³⁸⁷⁶³ is an apocalyptic number.

138763 is a deficient number, since it is larger than the sum of its proper divisors (1).

138763 is an equidigital number, since it uses as much as digits as its factorization.

138763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 28.

The square root of 138763 is about 372.5090602925. The cubic root of 138763 is about 51.7715570609.

The spelling of 138763 in words is "one hundred thirty-eight thousand, seven hundred sixty-three".