138846166 has 4 divisors (see below), whose sum is σ = 208269252. Its totient is φ = 69423082.

The previous prime is 138846143. The next prime is 138846181. The reversal of 138846166 is 661648831.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34711540 + ... + 34711543.

It is an arithmetic number, because the mean of its divisors is an integer number (52067313).

Almost surely, 2^138846166 is an apocalyptic number.

138846166 is a deficient number, since it is larger than the sum of its proper divisors (69423086).

138846166 is an equidigital number, since it uses as much as digits as its factorization.

138846166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69423085.

The product of its digits is 165888, while the sum is 43.

The square root of 138846166 is about 11783.3003016982. The cubic root of 138846166 is about 517.8189789005.

The spelling of 138846166 in words is "one hundred thirty-eight million, eight hundred forty-six thousand, one hundred sixty-six".