166151266 has 8 divisors (see below), whose sum is σ = 257821020. Its totient is φ = 80210928.

The previous prime is 166151263. The next prime is 166151267. The reversal of 166151266 is 662151661.

It is a happy number.

166151266 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 165765625 + 385641 = 12875^2 + 621^2 .

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

It is not an unprimeable number, because it can be changed into a prime (166151261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1432281 + ... + 1432396.

Almost surely, 2^166151266 is an apocalyptic number.

166151266 is a deficient number, since it is larger than the sum of its proper divisors (91669754).

166151266 is a wasteful number, since it uses less digits than its factorization.

166151266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864708.

The product of its digits is 12960, while the sum is 34.

The square root of 166151266 is about 12889.9676493000. The cubic root of 166151266 is about 549.7533505628.

The spelling of 166151266 in words is "one hundred sixty-six million, one hundred fifty-one thousand, two hundred sixty-six".