166850851 has 4 divisors (see below), whose sum is σ = 167130000. Its totient is φ = 166571704.

The previous prime is 166850843. The next prime is 166850861. The reversal of 166850851 is 158058661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166850851 - 2³ = 166850843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166850821) 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, 138676 + ... + 139873.

It is an arithmetic number, because the mean of its divisors is an integer number (41782500).

Almost surely, 2^166850851 is an apocalyptic number.

166850851 is a deficient number, since it is larger than the sum of its proper divisors (279149).

166850851 is an equidigital number, since it uses as much as digits as its factorization.

166850851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279148.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 166850851 is about 12917.0759462039. The cubic root of 166850851 is about 550.5238546085.

The spelling of 166850851 in words is "one hundred sixty-six million, eight hundred fifty thousand, eight hundred fifty-one".