138770307 has 32 divisors (see below), whose sum is σ = 229051200. Its totient is φ = 82446336.

The previous prime is 138770297. The next prime is 138770311. The reversal of 138770307 is 703077831.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-138770307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138770207) 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 31 ways as a sum of consecutive naturals, for example, 3363 + ... + 16995.

It is an arithmetic number, because the mean of its divisors is an integer number (7157850).

Almost surely, 2^138770307 is an apocalyptic number.

138770307 is a deficient number, since it is larger than the sum of its proper divisors (90280893).

138770307 is a wasteful number, since it uses less digits than its factorization.

138770307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13684 (or 13678 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 138770307 is about 11780.0809419970. The cubic root of 138770307 is about 517.7246577607.

The spelling of 138770307 in words is "one hundred thirty-eight million, seven hundred seventy thousand, three hundred seven".