138500333 has 2 divisors, whose sum is σ = 138500334. Its totient is φ = 138500332.

The previous prime is 138500321. The next prime is 138500353. The reversal of 138500333 is 333005831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78623689 + 59876644 = 8867^2 + 7738^2 .

It is an emirp because it is prime and its reverse (333005831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138500333 - 2¹⁸ = 138238189 is a prime.

It is a super-2 number, since 2×138500333² = 38364684482221778, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138500303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69250166 + 69250167.

It is an arithmetic number, because the mean of its divisors is an integer number (69250167).

Almost surely, 2^138500333 is an apocalyptic number.

It is an amenable number.

138500333 is a deficient number, since it is larger than the sum of its proper divisors (1).

138500333 is an equidigital number, since it uses as much as digits as its factorization.

138500333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 138500333 is about 11768.6164437456. The cubic root of 138500333 is about 517.3886998772.

The spelling of 138500333 in words is "one hundred thirty-eight million, five hundred thousand, three hundred thirty-three".