138647283 has 16 divisors (see below), whose sum is σ = 192623616. Its totient is φ = 88607520.

The previous prime is 138647273. The next prime is 138647293. The reversal of 138647283 is 382746831.

138647283 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (138647273) and next prime (138647293).

It is not a de Polignac number, because 138647283 - 2⁶ = 138647219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138647203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2985 + ... + 16917.

It is an arithmetic number, because the mean of its divisors is an integer number (12038976).

Almost surely, 2^138647283 is an apocalyptic number.

138647283 is a deficient number, since it is larger than the sum of its proper divisors (53976333).

138647283 is a wasteful number, since it uses less digits than its factorization.

138647283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14074.

The product of its digits is 193536, while the sum is 42.

The square root of 138647283 is about 11774.8580883168. The cubic root of 138647283 is about 517.5716197640.

The spelling of 138647283 in words is "one hundred thirty-eight million, six hundred forty-seven thousand, two hundred eighty-three".