166243210 has 16 divisors (see below), whose sum is σ = 341986176. Its totient is φ = 56997648.

The previous prime is 166243201. The next prime is 166243213. The reversal of 166243210 is 12342661.

166243210 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 is a super-2 number, since 2×166243210² = 55273609742208200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166243213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1187382 + ... + 1187521.

It is an arithmetic number, because the mean of its divisors is an integer number (21374136).

Almost surely, 2^166243210 is an apocalyptic number.

166243210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166243210 is an abundant number, since it is smaller than the sum of its proper divisors (175742966).

166243210 is a wasteful number, since it uses less digits than its factorization.

166243210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374917.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 166243210 is about 12893.5336506328. The cubic root of 166243210 is about 549.8547384976.

Adding to 166243210 its reverse (12342661), we get a palindrome (178585871).

The spelling of 166243210 in words is "one hundred sixty-six million, two hundred forty-three thousand, two hundred ten".