166040473 has 8 divisors (see below), whose sum is σ = 173498688. Its totient is φ = 158602224.

The previous prime is 166040443. The next prime is 166040489. The reversal of 166040473 is 374040661.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166040473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166040443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13515 + ... + 22687.

It is an arithmetic number, because the mean of its divisors is an integer number (21687336).

Almost surely, 2^166040473 is an apocalyptic number.

It is an amenable number.

166040473 is a deficient number, since it is larger than the sum of its proper divisors (7458215).

166040473 is an equidigital number, since it uses as much as digits as its factorization.

166040473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9983.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 166040473 is about 12885.6692880114. The cubic root of 166040473 is about 549.6311278680.

The spelling of 166040473 in words is "one hundred sixty-six million, forty thousand, four hundred seventy-three".