138558845 has 8 divisors (see below), whose sum is σ = 169089120. Its totient is φ = 108968080.

The previous prime is 138558799. The next prime is 138558851. The reversal of 138558845 is 548855831.

It is a happy number.

138558845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 138558845 - 2¹⁰ = 138557821 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 138558845.

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, 234551 + ... + 235140.

It is an arithmetic number, because the mean of its divisors is an integer number (21136140).

Almost surely, 2^138558845 is an apocalyptic number.

It is an amenable number.

138558845 is a deficient number, since it is larger than the sum of its proper divisors (30530275).

138558845 is an equidigital number, since it uses as much as digits as its factorization.

138558845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469755.

The product of its digits is 768000, while the sum is 47.

The square root of 138558845 is about 11771.1021149253. The cubic root of 138558845 is about 517.4615497271.

The spelling of 138558845 in words is "one hundred thirty-eight million, five hundred fifty-eight thousand, eight hundred forty-five".