166141810 has 8 divisors (see below), whose sum is σ = 299055276. Its totient is φ = 66456720.

The previous prime is 166141777. The next prime is 166141813. The reversal of 166141810 is 18141661.

It can be written as a sum of positive squares in 2 ways, for example, as 157326849 + 8814961 = 12543^2 + 2969^2 .

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

It is a super-2 number, since 2×166141810² = 55206202060152200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166141813) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8307081 + ... + 8307100.

Almost surely, 2^166141810 is an apocalyptic number.

166141810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166141810 is a deficient number, since it is larger than the sum of its proper divisors (132913466).

166141810 is a wasteful number, since it uses less digits than its factorization.

166141810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16614188.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 166141810 is about 12889.6008471946. The cubic root of 166141810 is about 549.7429211783.

The spelling of 166141810 in words is "one hundred sixty-six million, one hundred forty-one thousand, eight hundred ten".