166346018 has 8 divisors (see below), whose sum is σ = 249585948. Its totient is φ = 83150704.

The previous prime is 166346017. The next prime is 166346023. The reversal of 166346018 is 810643661.

166346018 is digitally balanced in base 2 and base 3, because in such bases 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 165456769 + 889249 = 12863^2 + 943^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (166346017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680 + ... + 18252.

Almost surely, 2^166346018 is an apocalyptic number.

166346018 is a deficient number, since it is larger than the sum of its proper divisors (83239930).

166346018 is a wasteful number, since it uses less digits than its factorization.

166346018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22308.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 166346018 is about 12897.5198391008. The cubic root of 166346018 is about 549.9680620573.

Adding to 166346018 its reverse (810643661), we get a palindrome (976989679).

The spelling of 166346018 in words is "one hundred sixty-six million, three hundred forty-six thousand, eighteen".