166289471 has 16 divisors (see below), whose sum is σ = 178489344. Its totient is φ = 154544544.

The previous prime is 166289467. The next prime is 166289489. The reversal of 166289471 is 174982661.

It is not a de Polignac number, because 166289471 - 2² = 166289467 is a prime.

It is a super-3 number, since 3×166289471³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166289441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273650 + ... + 274256.

It is an arithmetic number, because the mean of its divisors is an integer number (11155584).

Almost surely, 2^166289471 is an apocalyptic number.

166289471 is a deficient number, since it is larger than the sum of its proper divisors (12199873).

166289471 is a wasteful number, since it uses less digits than its factorization.

166289471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950.

The product of its digits is 145152, while the sum is 44.

The square root of 166289471 is about 12895.3274871172. The cubic root of 166289471 is about 549.9057370135.

The spelling of 166289471 in words is "one hundred sixty-six million, two hundred eighty-nine thousand, four hundred seventy-one".