143664193 has 4 divisors (see below), whose sum is σ = 143755200. Its totient is φ = 143573188.

The previous prime is 143664167. The next prime is 143664253. The reversal of 143664193 is 391466341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 143664193 - 2²⁵ = 110109761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143664893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43093 + ... + 46306.

It is an arithmetic number, because the mean of its divisors is an integer number (35938800).

Almost surely, 2^143664193 is an apocalyptic number.

It is an amenable number.

143664193 is a deficient number, since it is larger than the sum of its proper divisors (91007).

143664193 is an equidigital number, since it uses as much as digits as its factorization.

143664193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91006.

The product of its digits is 46656, while the sum is 37.

The square root of 143664193 is about 11985.9998748540. Note that the first 3 decimals coincide. The cubic root of 143664193 is about 523.7405250022.

The spelling of 143664193 in words is "one hundred forty-three million, six hundred sixty-four thousand, one hundred ninety-three".