166331532 has 24 divisors (see below), whose sum is σ = 388839472. Its totient is φ = 55339200.

The previous prime is 166331527. The next prime is 166331533. The reversal of 166331532 is 235133661.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 166331532.

It is not an unprimeable number, because it can be changed into a prime (166331533) 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 7 ways as a sum of consecutive naturals, for example, 6319 + ... + 19302.

Almost surely, 2^166331532 is an apocalyptic number.

166331532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166331532 is an abundant number, since it is smaller than the sum of its proper divisors (222507940).

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

166331532 is a wasteful number, since it uses less digits than its factorization.

166331532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26169 (or 26167 counting only the distinct ones).

The product of its digits is 9720, while the sum is 30.

The square root of 166331532 is about 12896.9582460362. The cubic root of 166331532 is about 549.9520972054.

The spelling of 166331532 in words is "one hundred sixty-six million, three hundred thirty-one thousand, five hundred thirty-two".