138018037 has 2 divisors, whose sum is σ = 138018038. Its totient is φ = 138018036.

The previous prime is 138018031. The next prime is 138018061. The reversal of 138018037 is 730810831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127035441 + 10982596 = 11271^2 + 3314^2 .

It is a cyclic number.

It is not a de Polignac number, because 138018037 - 2¹⁵ = 137985269 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138018031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69009018 + 69009019.

It is an arithmetic number, because the mean of its divisors is an integer number (69009019).

Almost surely, 2^138018037 is an apocalyptic number.

It is an amenable number.

138018037 is a deficient number, since it is larger than the sum of its proper divisors (1).

138018037 is an equidigital number, since it uses as much as digits as its factorization.

138018037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 138018037 is about 11748.1078050893. The cubic root of 138018037 is about 516.7874384801.

Adding to 138018037 its reverse (730810831), we get a palindrome (868828868).

The spelling of 138018037 in words is "one hundred thirty-eight million, eighteen thousand, thirty-seven".