138269503 has 4 divisors (see below), whose sum is σ = 138302608. Its totient is φ = 138236400.

The previous prime is 138269501. The next prime is 138269531. The reversal of 138269503 is 305962831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138269503 - 2¹ = 138269501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138269501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9198 + ... + 19003.

It is an arithmetic number, because the mean of its divisors is an integer number (34575652).

Almost surely, 2^138269503 is an apocalyptic number.

138269503 is a deficient number, since it is larger than the sum of its proper divisors (33105).

138269503 is an equidigital number, since it uses as much as digits as its factorization.

138269503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33104.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 138269503 is about 11758.8053389790. The cubic root of 138269503 is about 517.1011067219.

The spelling of 138269503 in words is "one hundred thirty-eight million, two hundred sixty-nine thousand, five hundred three".