164449875 has 16 divisors (see below), whose sum is σ = 273645216. Its totient is φ = 87706400.

The previous prime is 164449871. The next prime is 164449877. The reversal of 164449875 is 578944461.

It is not a de Polignac number, because 164449875 - 2² = 164449871 is a prime.

It is a super-2 number, since 2×164449875² = 54087522775031250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164449871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218892 + ... + 219641.

It is an arithmetic number, because the mean of its divisors is an integer number (17102826).

Almost surely, 2^164449875 is an apocalyptic number.

164449875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

164449875 is a deficient number, since it is larger than the sum of its proper divisors (109195341).

164449875 is an equidigital number, since it uses as much as digits as its factorization.

164449875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438551 (or 438541 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 164449875 is about 12823.8011135544. The cubic root of 164449875 is about 547.8704150857.

The spelling of 164449875 in words is "one hundred sixty-four million, four hundred forty-nine thousand, eight hundred seventy-five".