166143330 has 24 divisors (see below), whose sum is σ = 431972892. Its totient is φ = 44304864.

The previous prime is 166143319. The next prime is 166143347. The reversal of 166143330 is 33341661.

166143330 is a `hidden beast` number, since 16 + 614 + 3 + 3 + 30 = 666.

166143330 is digitally balanced in base 2, because in such base 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 165096801 + 1046529 = 12849^2 + 1023^2 .

It is a super-2 number, since 2×166143330² = 55207212206977800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166143294 and 166143303.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 922929 + ... + 923108.

Almost surely, 2^166143330 is an apocalyptic number.

166143330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166143330 is an abundant number, since it is smaller than the sum of its proper divisors (265829562).

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

166143330 is a wasteful number, since it uses less digits than its factorization.

166143330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846050 (or 1846047 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 166143330 is about 12889.6598093200. The cubic root of 166143330 is about 549.7445976712.

Adding to 166143330 its reverse (33341661), we get a palindrome (199484991).

The spelling of 166143330 in words is "one hundred sixty-six million, one hundred forty-three thousand, three hundred thirty".