138334263 has 8 divisors (see below), whose sum is σ = 190806000. Its totient is φ = 89042688.

The previous prime is 138334247. The next prime is 138334289. The reversal of 138334263 is 362433831.

138334263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138334263 - 2⁴ = 138334247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138334223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794938 + ... + 795111.

It is an arithmetic number, because the mean of its divisors is an integer number (23850750).

Almost surely, 2^138334263 is an apocalyptic number.

138334263 is a deficient number, since it is larger than the sum of its proper divisors (52471737).

138334263 is a wasteful number, since it uses less digits than its factorization.

138334263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590081.

The product of its digits is 31104, while the sum is 33.

The square root of 138334263 is about 11761.5586977237. The cubic root of 138334263 is about 517.1818240655.

The spelling of 138334263 in words is "one hundred thirty-eight million, three hundred thirty-four thousand, two hundred sixty-three".