166203330 has 16 divisors (see below), whose sum is σ = 398888064. Its totient is φ = 44320880.

The previous prime is 166203329. The next prime is 166203337. The reversal of 166203330 is 33302661.

It is a self number, because there is not a number n which added to its sum of digits gives 166203330.

It is not an unprimeable number, because it can be changed into a prime (166203337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2770026 + ... + 2770085.

It is an arithmetic number, because the mean of its divisors is an integer number (24930504).

Almost surely, 2^166203330 is an apocalyptic number.

166203330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166203330 is an abundant number, since it is smaller than the sum of its proper divisors (232684734).

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

166203330 is a wasteful number, since it uses less digits than its factorization.

166203330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5540121.

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 166203330 is about 12891.9870462237. The cubic root of 166203330 is about 549.8107668558.

Adding to 166203330 its reverse (33302661), we get a palindrome (199505991).

The spelling of 166203330 in words is "one hundred sixty-six million, two hundred three thousand, three hundred thirty".