166452166 has 4 divisors (see below), whose sum is σ = 249678252. Its totient is φ = 83226082.

The previous prime is 166452119. The next prime is 166452227. The reversal of 166452166 is 661254661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 661254661 = 17 ⋅38897333.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41613040 + ... + 41613043.

It is an arithmetic number, because the mean of its divisors is an integer number (62419563).

Almost surely, 2^166452166 is an apocalyptic number.

166452166 is a deficient number, since it is larger than the sum of its proper divisors (83226086).

166452166 is an equidigital number, since it uses as much as digits as its factorization.

166452166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83226085.

The product of its digits is 51840, while the sum is 37.

The square root of 166452166 is about 12901.6342375685. The cubic root of 166452166 is about 550.0850182623.

The spelling of 166452166 in words is "one hundred sixty-six million, four hundred fifty-two thousand, one hundred sixty-six".