138228083 has 4 divisors (see below), whose sum is σ = 157974960. Its totient is φ = 118481208.

The previous prime is 138228067. The next prime is 138228089. The reversal of 138228083 is 380822831.

It is a happy number.

138228083 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138228083 - 2⁴ = 138228067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138228089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9873428 + ... + 9873441.

It is an arithmetic number, because the mean of its divisors is an integer number (39493740).

Almost surely, 2^138228083 is an apocalyptic number.

138228083 is a deficient number, since it is larger than the sum of its proper divisors (19746877).

138228083 is an equidigital number, since it uses as much as digits as its factorization.

138228083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19746876.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 138228083 is about 11757.0439737206. The cubic root of 138228083 is about 517.0494673114.

The spelling of 138228083 in words is "one hundred thirty-eight million, two hundred twenty-eight thousand, eighty-three".