164243504 has 30 divisors (see below), whose sum is σ = 321830964. Its totient is φ = 81200640.

The previous prime is 164243459. The next prime is 164243507. The reversal of 164243504 is 405342461.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (164243507) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 149999 + ... + 151089.

Almost surely, 2^164243504 is an apocalyptic number.

It is an amenable number.

164243504 is a deficient number, since it is larger than the sum of its proper divisors (157587460).

164243504 is an equidigital number, since it uses as much as digits as its factorization.

164243504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293 (or 1190 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 164243504 is about 12815.7521823731. The cubic root of 164243504 is about 547.6411417910.

Adding to 164243504 its reverse (405342461), we get a palindrome (569585965).

The spelling of 164243504 in words is "one hundred sixty-four million, two hundred forty-three thousand, five hundred four".