138730283 has 4 divisors (see below), whose sum is σ = 138855600. Its totient is φ = 138604968.

The previous prime is 138730247. The next prime is 138730313. The reversal of 138730283 is 382037831.

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 138730283 - 2⁸ = 138730027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138730223) 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 3 ways as a sum of consecutive naturals, for example, 60983 + ... + 63216.

It is an arithmetic number, because the mean of its divisors is an integer number (34713900).

Almost surely, 2^138730283 is an apocalyptic number.

138730283 is a deficient number, since it is larger than the sum of its proper divisors (125317).

138730283 is a wasteful number, since it uses less digits than its factorization.

138730283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125316.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 138730283 is about 11778.3820196154. The cubic root of 138730283 is about 517.6748790902.

The spelling of 138730283 in words is "one hundred thirty-eight million, seven hundred thirty thousand, two hundred eighty-three".