138770926 has 16 divisors (see below), whose sum is σ = 240906240. Its totient is φ = 58719960.

The previous prime is 138770921. The next prime is 138770939. The reversal of 138770926 is 629077831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138770921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61630 + ... + 63841.

It is an arithmetic number, because the mean of its divisors is an integer number (15056640).

Almost surely, 2^138770926 is an apocalyptic number.

138770926 is a deficient number, since it is larger than the sum of its proper divisors (102135314).

138770926 is a wasteful number, since it uses less digits than its factorization.

138770926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125559.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 138770926 is about 11780.1072151318. The cubic root of 138770926 is about 517.7254275485.

The spelling of 138770926 in words is "one hundred thirty-eight million, seven hundred seventy thousand, nine hundred twenty-six".