138770107 has 24 divisors (see below), whose sum is σ = 165186000. Its totient is φ = 116214336.

The previous prime is 138770089. The next prime is 138770111. The reversal of 138770107 is 701077831.

It is a de Polignac number, because none of the positive numbers 2^k-138770107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138770147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 605869 + ... + 606097.

It is an arithmetic number, because the mean of its divisors is an integer number (6882750).

Almost surely, 2^138770107 is an apocalyptic number.

138770107 is a deficient number, since it is larger than the sum of its proper divisors (26415893).

138770107 is a wasteful number, since it uses less digits than its factorization.

138770107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 34.

The square root of 138770107 is about 11780.0724530879. The cubic root of 138770107 is about 517.7244090404.

The spelling of 138770107 in words is "one hundred thirty-eight million, seven hundred seventy thousand, one hundred seven".