164340393 has 16 divisors (see below), whose sum is σ = 258502656. Its totient is φ = 90879120.

The previous prime is 164340389. The next prime is 164340403. The reversal of 164340393 is 393043461.

164340393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 164340393 - 2² = 164340389 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164340353) 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, 125571 + ... + 126872.

It is an arithmetic number, because the mean of its divisors is an integer number (16156416).

Almost surely, 2^164340393 is an apocalyptic number.

It is an amenable number.

164340393 is a deficient number, since it is larger than the sum of its proper divisors (94162263).

164340393 is a wasteful number, since it uses less digits than its factorization.

164340393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252484.

The product of its (nonzero) digits is 23328, while the sum is 33.

The square root of 164340393 is about 12819.5316997151. The cubic root of 164340393 is about 547.7488070787.

The spelling of 164340393 in words is "one hundred sixty-four million, three hundred forty thousand, three hundred ninety-three".