138166546 has 8 divisors (see below), whose sum is σ = 236856960. Its totient is φ = 59214228.

The previous prime is 138166519. The next prime is 138166571. The reversal of 138166546 is 645661831.

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

It is a junction number, because it is equal to n+sod(n) for n = 138166499 and 138166508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4934506 + ... + 4934533.

It is an arithmetic number, because the mean of its divisors is an integer number (29607120).

Almost surely, 2^138166546 is an apocalyptic number.

138166546 is a deficient number, since it is larger than the sum of its proper divisors (98690414).

138166546 is an equidigital number, since it uses as much as digits as its factorization.

138166546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9869048.

The product of its digits is 103680, while the sum is 40.

The square root of 138166546 is about 11754.4266555200. The cubic root of 138166546 is about 516.9727284531.

The spelling of 138166546 in words is "one hundred thirty-eight million, one hundred sixty-six thousand, five hundred forty-six".