166361814 has 12 divisors (see below), whose sum is σ = 360450636. Its totient is φ = 55453932.

The previous prime is 166361809. The next prime is 166361827. The reversal of 166361814 is 418163661.

166361814 is a `hidden beast` number, since 1 + 6 + 636 + 1 + 8 + 14 = 666.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 4621144 + ... + 4621179.

It is an arithmetic number, because the mean of its divisors is an integer number (30037553).

Almost surely, 2^166361814 is an apocalyptic number.

166361814 is an abundant number, since it is smaller than the sum of its proper divisors (194088822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166361814 is a wasteful number, since it uses less digits than its factorization.

166361814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9242331 (or 9242328 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 166361814 is about 12898.1321903600. The cubic root of 166361814 is about 549.9854695886.

The spelling of 166361814 in words is "one hundred sixty-six million, three hundred sixty-one thousand, eight hundred fourteen".