138848305 has 8 divisors (see below), whose sum is σ = 167188392. Its totient is φ = 110698368.

The previous prime is 138848291. The next prime is 138848323. The reversal of 138848305 is 503848831.

It can be written as a sum of positive squares in 4 ways, for example, as 21169201 + 117679104 = 4601^2 + 10848^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 138848305 - 2¹³ = 138840113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45924 + ... + 48853.

It is an arithmetic number, because the mean of its divisors is an integer number (20898549).

Almost surely, 2^138848305 is an apocalyptic number.

It is an amenable number.

138848305 is a deficient number, since it is larger than the sum of its proper divisors (28340087).

138848305 is an equidigital number, since it uses as much as digits as its factorization.

138848305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95075.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 138848305 is about 11783.3910653937. The cubic root of 138848305 is about 517.8216379803.

The spelling of 138848305 in words is "one hundred thirty-eight million, eight hundred forty-eight thousand, three hundred five".