164394268399 has 8 divisors (see below), whose sum is σ = 166868730288. Its totient is φ = 161920418880.

The previous prime is 164394268393. The next prime is 164394268457. The reversal of 164394268399 is 993862493461.

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 164394268399 - 2³ = 164394268391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164394268399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164394268391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402939 + ... + 700819.

It is an arithmetic number, because the mean of its divisors is an integer number (20858591286).

Almost surely, 2^164394268399 is an apocalyptic number.

164394268399 is a deficient number, since it is larger than the sum of its proper divisors (2474461889).

164394268399 is an equidigital number, since it uses as much as digits as its factorization.

164394268399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306185.

The product of its digits is 60466176, while the sum is 64.

The spelling of 164394268399 in words is "one hundred sixty-four billion, three hundred ninety-four million, two hundred sixty-eight thousand, three hundred ninety-nine".