164249897 has 8 divisors (see below), whose sum is σ = 190516416. Its totient is φ = 138683952.

The previous prime is 164249893. The next prime is 164249929. The reversal of 164249897 is 798942461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164249897 - 2² = 164249893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164249893) 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, 174638 + ... + 175575.

It is an arithmetic number, because the mean of its divisors is an integer number (23814552).

Almost surely, 2^164249897 is an apocalyptic number.

It is an amenable number.

164249897 is a deficient number, since it is larger than the sum of its proper divisors (26266519).

164249897 is an equidigital number, since it uses as much as digits as its factorization.

164249897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350287.

The product of its digits is 870912, while the sum is 50.

The square root of 164249897 is about 12816.0015995629. The cubic root of 164249897 is about 547.6482471443.

The spelling of 164249897 in words is "one hundred sixty-four million, two hundred forty-nine thousand, eight hundred ninety-seven".