194525393 has 4 divisors (see below), whose sum is σ = 194595840. Its totient is φ = 194454948.

The previous prime is 194525389. The next prime is 194525399. The reversal of 194525393 is 393525491.

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 194525393 - 2² = 194525389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 194525393.

It is not an unprimeable number, because it can be changed into a prime (194525399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30905 + ... + 36662.

It is an arithmetic number, because the mean of its divisors is an integer number (48648960).

Almost surely, 2^194525393 is an apocalyptic number.

It is an amenable number.

194525393 is a deficient number, since it is larger than the sum of its proper divisors (70447).

194525393 is an equidigital number, since it uses as much as digits as its factorization.

194525393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70446.

The product of its digits is 145800, while the sum is 41.

The square root of 194525393 is about 13947.2360344263. The cubic root of 194525393 is about 579.4181570901.

The spelling of 194525393 in words is "one hundred ninety-four million, five hundred twenty-five thousand, three hundred ninety-three".