138274606 has 4 divisors (see below), whose sum is σ = 207411912. Its totient is φ = 69137302.

The previous prime is 138274603. The next prime is 138274607. The reversal of 138274606 is 606472831.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138274603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34568650 + ... + 34568653.

It is an arithmetic number, because the mean of its divisors is an integer number (51852978).

Almost surely, 2^138274606 is an apocalyptic number.

138274606 is a deficient number, since it is larger than the sum of its proper divisors (69137306).

138274606 is an equidigital number, since it uses as much as digits as its factorization.

138274606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69137305.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 138274606 is about 11759.0223233056. The cubic root of 138274606 is about 517.1074680535.

The spelling of 138274606 in words is "one hundred thirty-eight million, two hundred seventy-four thousand, six hundred six".