166122869 has 8 divisors (see below), whose sum is σ = 181446240. Its totient is φ = 150836400.

The previous prime is 166122841. The next prime is 166122907. The reversal of 166122869 is 968221661.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-166122869 is a prime.

It is a super-2 number, since 2×166122869² = 55193615209582322, which contains 22 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 (166122809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 659 + ... + 18239.

It is an arithmetic number, because the mean of its divisors is an integer number (22680780).

Almost surely, 2^166122869 is an apocalyptic number.

It is an amenable number.

166122869 is a deficient number, since it is larger than the sum of its proper divisors (15323371).

166122869 is a wasteful number, since it uses less digits than its factorization.

166122869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18451.

The product of its digits is 62208, while the sum is 41.

The square root of 166122869 is about 12888.8660866657. The cubic root of 166122869 is about 549.7220292338.

Subtracting from 166122869 its product of digits (62208), we obtain a palindrome (166060661).

The spelling of 166122869 in words is "one hundred sixty-six million, one hundred twenty-two thousand, eight hundred sixty-nine".