166448985 has 16 divisors (see below), whose sum is σ = 266478336. Its totient is φ = 88719488.

The previous prime is 166448969. The next prime is 166449011. The reversal of 166448985 is 589844661.

It is a cyclic number.

It is not a de Polignac number, because 166448985 - 2⁴ = 166448969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47152 + ... + 50558.

It is an arithmetic number, because the mean of its divisors is an integer number (16654896).

Almost surely, 2^166448985 is an apocalyptic number.

166448985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166448985 is a deficient number, since it is larger than the sum of its proper divisors (100029351).

166448985 is a wasteful number, since it uses less digits than its factorization.

166448985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6672.

The product of its digits is 1658880, while the sum is 51.

The square root of 166448985 is about 12901.5109580235. The cubic root of 166448985 is about 550.0815140892.

The spelling of 166448985 in words is "one hundred sixty-six million, four hundred forty-eight thousand, nine hundred eighty-five".