138871794 has 8 divisors (see below), whose sum is σ = 277743600. Its totient is φ = 46290596.

The previous prime is 138871751. The next prime is 138871849. The reversal of 138871794 is 497178831.

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

138871794 is an admirable number.

It is a Curzon 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, 11572644 + ... + 11572655.

It is an arithmetic number, because the mean of its divisors is an integer number (34717950).

Almost surely, 2^138871794 is an apocalyptic number.

138871794 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138871794 is a wasteful number, since it uses less digits than its factorization.

138871794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23145304.

The product of its digits is 338688, while the sum is 48.

The square root of 138871794 is about 11784.3877227457. The cubic root of 138871794 is about 517.8508363361.

The spelling of 138871794 in words is "one hundred thirty-eight million, eight hundred seventy-one thousand, seven hundred ninety-four".