138199733 has 8 divisors (see below), whose sum is σ = 158088768. Its totient is φ = 118347264.

The previous prime is 138199723. The next prime is 138199741. The reversal of 138199733 is 337991831.

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

It is not a de Polignac number, because 138199733 - 2⁴ = 138199717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138199723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491 + ... + 16632.

It is an arithmetic number, because the mean of its divisors is an integer number (19761096).

Almost surely, 2^138199733 is an apocalyptic number.

It is an amenable number.

138199733 is a deficient number, since it is larger than the sum of its proper divisors (19889035).

138199733 is a wasteful number, since it uses less digits than its factorization.

138199733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18283.

The product of its digits is 122472, while the sum is 44.

The square root of 138199733 is about 11755.8382516943. The cubic root of 138199733 is about 517.0141166689.

The spelling of 138199733 in words is "one hundred thirty-eight million, one hundred ninety-nine thousand, seven hundred thirty-three".