138618083 has 2 divisors, whose sum is σ = 138618084. Its totient is φ = 138618082.

The previous prime is 138618071. The next prime is 138618097. The reversal of 138618083 is 380816831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138618083 - 2⁸ = 138617827 is a prime.

It is a super-3 number, since 3×138618083³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (138618023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69309041 + 69309042.

It is an arithmetic number, because the mean of its divisors is an integer number (69309042).

Almost surely, 2^138618083 is an apocalyptic number.

138618083 is a deficient number, since it is larger than the sum of its proper divisors (1).

138618083 is an equidigital number, since it uses as much as digits as its factorization.

138618083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 138618083 is about 11773.6180930078. The cubic root of 138618083 is about 517.5352825875.

The spelling of 138618083 in words is "one hundred thirty-eight million, six hundred eighteen thousand, eighty-three".