166849495 has 4 divisors (see below), whose sum is σ = 200219400. Its totient is φ = 133479592.

The previous prime is 166849453. The next prime is 166849511. The reversal of 166849495 is 594948661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 594948661 = 1831 ⋅324931.

It is a cyclic number.

It is not a de Polignac number, because 166849495 - 2¹⁹ = 166325207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16684945 + ... + 16684954.

It is an arithmetic number, because the mean of its divisors is an integer number (50054850).

Almost surely, 2^166849495 is an apocalyptic number.

166849495 is a deficient number, since it is larger than the sum of its proper divisors (33369905).

166849495 is an equidigital number, since it uses as much as digits as its factorization.

166849495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33369904.

The product of its digits is 1866240, while the sum is 52.

The square root of 166849495 is about 12917.0234574379. The cubic root of 166849495 is about 550.5223632319.

The spelling of 166849495 in words is "one hundred sixty-six million, eight hundred forty-nine thousand, four hundred ninety-five".