138627533 has 4 divisors (see below), whose sum is σ = 151230048. Its totient is φ = 126025020.

The previous prime is 138627499. The next prime is 138627539. The reversal of 138627533 is 335726831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 138627533 - 2¹² = 138623437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138627539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6301241 + ... + 6301262.

It is an arithmetic number, because the mean of its divisors is an integer number (37807512).

Almost surely, 2^138627533 is an apocalyptic number.

It is an amenable number.

138627533 is a deficient number, since it is larger than the sum of its proper divisors (12602515).

138627533 is a wasteful number, since it uses less digits than its factorization.

138627533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12602514.

The product of its digits is 90720, while the sum is 38.

The square root of 138627533 is about 11774.0194071523. The cubic root of 138627533 is about 517.5470429513.

The spelling of 138627533 in words is "one hundred thirty-eight million, six hundred twenty-seven thousand, five hundred thirty-three".