138302902 has 4 divisors (see below), whose sum is σ = 207454356. Its totient is φ = 69151450.

The previous prime is 138302897. The next prime is 138302951. The reversal of 138302902 is 209203831.

138302902 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34575724 + ... + 34575727.

It is an arithmetic number, because the mean of its divisors is an integer number (51863589).

Almost surely, 2^138302902 is an apocalyptic number.

138302902 is a deficient number, since it is larger than the sum of its proper divisors (69151454).

138302902 is an equidigital number, since it uses as much as digits as its factorization.

138302902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69151453.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 138302902 is about 11760.2254230095. The cubic root of 138302902 is about 517.1427386294.

The spelling of 138302902 in words is "one hundred thirty-eight million, three hundred two thousand, nine hundred two".