138002533 has 2 divisors, whose sum is σ = 138002534. Its totient is φ = 138002532.

The previous prime is 138002531. The next prime is 138002551. The reversal of 138002533 is 335200831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77053284 + 60949249 = 8778^2 + 7807^2 .

It is a cyclic number.

It is not a de Polignac number, because 138002533 - 2¹ = 138002531 is a prime.

It is a super-2 number, since 2×138002533² = 38089398228832178, which contains 22 as substring.

Together with 138002531, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 138002498 and 138002507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138002531) 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, 69001266 + 69001267.

It is an arithmetic number, because the mean of its divisors is an integer number (69001267).

Almost surely, 2^138002533 is an apocalyptic number.

It is an amenable number.

138002533 is a deficient number, since it is larger than the sum of its proper divisors (1).

138002533 is an equidigital number, since it uses as much as digits as its factorization.

138002533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 138002533 is about 11747.4479356156. The cubic root of 138002533 is about 516.7680869696.

The spelling of 138002533 in words is "one hundred thirty-eight million, two thousand, five hundred thirty-three".