138545494 has 8 divisors (see below), whose sum is σ = 207962280. Its totient is φ = 69224736.

The previous prime is 138545489. The next prime is 138545531. The reversal of 138545494 is 494545831.

138545494 is digitally balanced in base 3, 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 a self number, because there is not a number n which added to its sum of digits gives 138545494.

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, 20284 + ... + 26239.

It is an arithmetic number, because the mean of its divisors is an integer number (25995285).

Almost surely, 2^138545494 is an apocalyptic number.

138545494 is a deficient number, since it is larger than the sum of its proper divisors (69416786).

138545494 is a wasteful number, since it uses less digits than its factorization.

138545494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48014.

The product of its digits is 345600, while the sum is 43.

The square root of 138545494 is about 11770.5349920894. The cubic root of 138545494 is about 517.4449289884. Note that the first 3 decimals are identical.

The spelling of 138545494 in words is "one hundred thirty-eight million, five hundred forty-five thousand, four hundred ninety-four".