138551422 has 8 divisors (see below), whose sum is σ = 207998856. Its totient is φ = 69218472.

The previous prime is 138551417. The next prime is 138551449. The reversal of 138551422 is 224155831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25528 + ... + 30475.

It is an arithmetic number, because the mean of its divisors is an integer number (25999857).

Almost surely, 2^138551422 is an apocalyptic number.

138551422 is a deficient number, since it is larger than the sum of its proper divisors (69447434).

138551422 is a wasteful number, since it uses less digits than its factorization.

138551422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57242.

The product of its digits is 9600, while the sum is 31.

The square root of 138551422 is about 11770.7868046278. The cubic root of 138551422 is about 517.4523089224.

The spelling of 138551422 in words is "one hundred thirty-eight million, five hundred fifty-one thousand, four hundred twenty-two".