138830833 has 8 divisors (see below), whose sum is σ = 141143040. Its totient is φ = 136535520.

The previous prime is 138830831. The next prime is 138830843. The reversal of 138830833 is 338038831.

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

It is a cyclic number.

It is not a de Polignac number, because 138830833 - 2¹ = 138830831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138830792 and 138830801.

It is not an unprimeable number, because it can be changed into a prime (138830831) 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, 12916 + ... + 21082.

It is an arithmetic number, because the mean of its divisors is an integer number (17642880).

Almost surely, 2^138830833 is an apocalyptic number.

It is an amenable number.

138830833 is a deficient number, since it is larger than the sum of its proper divisors (2312207).

138830833 is an equidigital number, since it uses as much as digits as its factorization.

138830833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8447.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 138830833 is about 11782.6496595630. The cubic root of 138830833 is about 517.7999170113.

The spelling of 138830833 in words is "one hundred thirty-eight million, eight hundred thirty thousand, eight hundred thirty-three".