138601946 has 8 divisors (see below), whose sum is σ = 237603360. Its totient is φ = 59400828.

The previous prime is 138601937. The next prime is 138601987. The reversal of 138601946 is 649106831.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4950056 + ... + 4950083.

It is an arithmetic number, because the mean of its divisors is an integer number (29700420).

Almost surely, 2^138601946 is an apocalyptic number.

138601946 is a deficient number, since it is larger than the sum of its proper divisors (99001414).

138601946 is an equidigital number, since it uses as much as digits as its factorization.

138601946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9900148.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 138601946 is about 11772.9327697053. The cubic root of 138601946 is about 517.5151991304.

The spelling of 138601946 in words is "one hundred thirty-eight million, six hundred one thousand, nine hundred forty-six".