138033646 has 8 divisors (see below), whose sum is σ = 207360144. Its totient is φ = 68913600.

The previous prime is 138033641. The next prime is 138033697. The reversal of 138033646 is 646330831.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138033641) 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, 49930 + ... + 52621.

It is an arithmetic number, because the mean of its divisors is an integer number (25920018).

Almost surely, 2^138033646 is an apocalyptic number.

138033646 is a deficient number, since it is larger than the sum of its proper divisors (69326498).

138033646 is a wasteful number, since it uses less digits than its factorization.

138033646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103226.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 138033646 is about 11748.7721060543. The cubic root of 138033646 is about 516.8069195837.

The spelling of 138033646 in words is "one hundred thirty-eight million, thirty-three thousand, six hundred forty-six".