138532063 has 4 divisors (see below), whose sum is σ = 140201208. Its totient is φ = 136862920.

The previous prime is 138532061. The next prime is 138532067. The reversal of 138532063 is 360235831.

138532063 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 360235831 = 17 ⋅21190343.

It is a cyclic number.

It is not a de Polignac number, because 138532063 - 2¹ = 138532061 is a prime.

It is a super-2 number, since 2×138532063² = 38382264958071938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138532061) 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, 834448 + ... + 834613.

It is an arithmetic number, because the mean of its divisors is an integer number (35050302).

Almost surely, 2^138532063 is an apocalyptic number.

138532063 is a deficient number, since it is larger than the sum of its proper divisors (1669145).

138532063 is an equidigital number, since it uses as much as digits as its factorization.

138532063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669144.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 138532063 is about 11769.9644434467. The cubic root of 138532063 is about 517.4282075799.

Adding to 138532063 its reverse (360235831), we get a palindrome (498767894).

The spelling of 138532063 in words is "one hundred thirty-eight million, five hundred thirty-two thousand, sixty-three".