193972193 has 4 divisors (see below), whose sum is σ = 205382340. Its totient is φ = 182562048.

The previous prime is 193972187. The next prime is 193972199. The reversal of 193972193 is 391279391.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (193972187) and next prime (193972199).

It can be written as a sum of positive squares in 2 ways, for example, as 52171729 + 141800464 = 7223^2 + 11908^2 .

It is not a de Polignac number, because 193972193 - 2⁸ = 193971937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193972199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5705048 + ... + 5705081.

It is an arithmetic number, because the mean of its divisors is an integer number (51345585).

Almost surely, 2^193972193 is an apocalyptic number.

It is an amenable number.

193972193 is a deficient number, since it is larger than the sum of its proper divisors (11410147).

193972193 is a wasteful number, since it uses less digits than its factorization.

193972193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11410146.

The product of its digits is 91854, while the sum is 44.

The square root of 193972193 is about 13927.3900282860. The cubic root of 193972193 is about 578.8683771869.

The spelling of 193972193 in words is "one hundred ninety-three million, nine hundred seventy-two thousand, one hundred ninety-three".