164143393 has 8 divisors (see below), whose sum is σ = 171103680. Its totient is φ = 157269840.

The previous prime is 164143391. The next prime is 164143403. The reversal of 164143393 is 393341461.

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 164143393 - 2¹ = 164143391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164143391) 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, 17805 + ... + 25402.

It is an arithmetic number, because the mean of its divisors is an integer number (21387960).

Almost surely, 2^164143393 is an apocalyptic number.

It is an amenable number.

164143393 is a deficient number, since it is larger than the sum of its proper divisors (6960287).

164143393 is a wasteful number, since it uses less digits than its factorization.

164143393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43367.

The product of its digits is 23328, while the sum is 34.

The square root of 164143393 is about 12811.8458076891. The cubic root of 164143393 is about 547.5298516559.

The spelling of 164143393 in words is "one hundred sixty-four million, one hundred forty-three thousand, three hundred ninety-three".