164243532 has 36 divisors (see below), whose sum is σ = 389167800. Its totient is φ = 53913024.

The previous prime is 164243507. The next prime is 164243539. The reversal of 164243532 is 235342461.

It is a self number, because there is not a number n which added to its sum of digits gives 164243532.

It is not an unprimeable number, because it can be changed into a prime (164243539) 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 11 ways as a sum of consecutive naturals, for example, 52344 + ... + 55392.

Almost surely, 2^164243532 is an apocalyptic number.

164243532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

164243532 is an abundant number, since it is smaller than the sum of its proper divisors (224924268).

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

164243532 is a wasteful number, since it uses less digits than its factorization.

164243532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3190 (or 3121 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 164243532 is about 12815.7532747787. The cubic root of 164243532 is about 547.6411729113.

Adding to 164243532 its reverse (235342461), we get a palindrome (399585993).

The spelling of 164243532 in words is "one hundred sixty-four million, two hundred forty-three thousand, five hundred thirty-two".