138620303 has 6 divisors (see below), whose sum is σ = 142085472. Its totient is φ = 135237680.

The previous prime is 138620297. The next prime is 138620353. The reversal of 138620303 is 303026831.

It is not a de Polignac number, because 138620303 - 2²⁰ = 137571727 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 (138620353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39551 + ... + 42912.

It is an arithmetic number, because the mean of its divisors is an integer number (23680912).

Almost surely, 2^138620303 is an apocalyptic number.

138620303 is a deficient number, since it is larger than the sum of its proper divisors (3465169).

138620303 is an frugal number, since it uses more digits than its factorization.

138620303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82545 (or 82504 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 138620303 is about 11773.7123712107. The cubic root of 138620303 is about 517.5380453876.

The spelling of 138620303 in words is "one hundred thirty-eight million, six hundred twenty thousand, three hundred three".