138285283 has 2 divisors, whose sum is σ = 138285284. Its totient is φ = 138285282.

The previous prime is 138285281. The next prime is 138285289. The reversal of 138285283 is 382582831.

It is a weak prime.

It is an emirp because it is prime and its reverse (382582831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138285283 - 2¹ = 138285281 is a prime.

Together with 138285281, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (138285281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69142641 + 69142642.

It is an arithmetic number, because the mean of its divisors is an integer number (69142642).

Almost surely, 2^138285283 is an apocalyptic number.

138285283 is a deficient number, since it is larger than the sum of its proper divisors (1).

138285283 is an equidigital number, since it uses as much as digits as its factorization.

138285283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92160, while the sum is 40.

The square root of 138285283 is about 11759.4763063667. The cubic root of 138285283 is about 517.1207773528.

The spelling of 138285283 in words is "one hundred thirty-eight million, two hundred eighty-five thousand, two hundred eighty-three".