138609302 has 8 divisors (see below), whose sum is σ = 223907376. Its totient is φ = 63973512.

The previous prime is 138609283. The next prime is 138609323. The reversal of 138609302 is 203906831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2665538 + ... + 2665589.

It is an arithmetic number, because the mean of its divisors is an integer number (27988422).

Almost surely, 2^138609302 is an apocalyptic number.

138609302 is a deficient number, since it is larger than the sum of its proper divisors (85298074).

138609302 is a wasteful number, since it uses less digits than its factorization.

138609302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5331142.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 138609302 is about 11773.2451770954. The cubic root of 138609302 is about 517.5243543036.

The spelling of 138609302 in words is "one hundred thirty-eight million, six hundred nine thousand, three hundred two".