166250289 has 8 divisors (see below), whose sum is σ = 221741440. Its totient is φ = 110796336.

The previous prime is 166250281. The next prime is 166250299. The reversal of 166250289 is 982052661.

166250289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 166250289 - 2³ = 166250281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166250281) 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, 3747 + ... + 18615.

It is an arithmetic number, because the mean of its divisors is an integer number (27717680).

Almost surely, 2^166250289 is an apocalyptic number.

It is an amenable number.

166250289 is a deficient number, since it is larger than the sum of its proper divisors (55491151).

166250289 is a wasteful number, since it uses less digits than its factorization.

166250289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18599.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 166250289 is about 12893.8081651621. The cubic root of 166250289 is about 549.8625430599.

The spelling of 166250289 in words is "one hundred sixty-six million, two hundred fifty thousand, two hundred eighty-nine".