138254558 has 16 divisors (see below), whose sum is σ = 225847440. Its totient is φ = 63091776.

The previous prime is 138254521. The next prime is 138254561. The reversal of 138254558 is 855452831.

It is a super-2 number, since 2×138254558² = 38228645615550728, which contains 22 as substring.

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, 27560 + ... + 32187.

It is an arithmetic number, because the mean of its divisors is an integer number (14115465).

Almost surely, 2^138254558 is an apocalyptic number.

138254558 is a deficient number, since it is larger than the sum of its proper divisors (87592882).

138254558 is a wasteful number, since it uses less digits than its factorization.

138254558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59851.

The product of its digits is 192000, while the sum is 41.

The square root of 138254558 is about 11758.1698405832. The cubic root of 138254558 is about 517.0824755841.

The spelling of 138254558 in words is "one hundred thirty-eight million, two hundred fifty-four thousand, five hundred fifty-eight".