138649022 has 4 divisors (see below), whose sum is σ = 207973536. Its totient is φ = 69324510.

The previous prime is 138649009. The next prime is 138649033. The reversal of 138649022 is 220946831.

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, 34662254 + ... + 34662257.

It is an arithmetic number, because the mean of its divisors is an integer number (51993384).

Almost surely, 2^138649022 is an apocalyptic number.

138649022 is a deficient number, since it is larger than the sum of its proper divisors (69324514).

138649022 is an equidigital number, since it uses as much as digits as its factorization.

138649022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69324513.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 138649022 is about 11774.9319318627. The cubic root of 138649022 is about 517.5737836561.

The spelling of 138649022 in words is "one hundred thirty-eight million, six hundred forty-nine thousand, twenty-two".