166212136 has 16 divisors (see below), whose sum is σ = 316038240. Its totient is φ = 81935280.

The previous prime is 166212131. The next prime is 166212149. The reversal of 166212136 is 631212661.

It is not an unprimeable number, because it can be changed into a prime (166212131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145746 + ... + 146881.

It is an arithmetic number, because the mean of its divisors is an integer number (19752390).

Almost surely, 2^166212136 is an apocalyptic number.

It is an amenable number.

166212136 is a deficient number, since it is larger than the sum of its proper divisors (149826104).

166212136 is a wasteful number, since it uses less digits than its factorization.

166212136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292704 (or 292700 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 166212136 is about 12892.3285716739. The cubic root of 166212136 is about 549.8204769462.

Adding to 166212136 its reverse (631212661), we get a palindrome (797424797).

The spelling of 166212136 in words is "one hundred sixty-six million, two hundred twelve thousand, one hundred thirty-six".