138922558 has 16 divisors (see below), whose sum is σ = 210176496. Its totient is φ = 68866560.

The previous prime is 138922543. The next prime is 138922573. The reversal of 138922558 is 855229831.

138922558 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (138922543) and next prime (138922573).

It is a congruent 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, 189160 + ... + 189892.

It is an arithmetic number, because the mean of its divisors is an integer number (13136031).

Almost surely, 2^138922558 is an apocalyptic number.

138922558 is a deficient number, since it is larger than the sum of its proper divisors (71253938).

138922558 is a wasteful number, since it uses less digits than its factorization.

138922558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419.

The product of its digits is 172800, while the sum is 43.

The square root of 138922558 is about 11786.5413926223. The cubic root of 138922558 is about 517.9139280472.

The spelling of 138922558 in words is "one hundred thirty-eight million, nine hundred twenty-two thousand, five hundred fifty-eight".