194958493 has 4 divisors (see below), whose sum is σ = 195012160. Its totient is φ = 194904828.

The previous prime is 194958469. The next prime is 194958497. The reversal of 194958493 is 394859491.

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, and also an emirpimes, since its reverse is a distinct semiprime: 394859491 = 13 ⋅30373807.

It is a cyclic number.

It is not a de Polignac number, because 194958493 - 2²¹ = 192861341 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 194958493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194958497) 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, 20955 + ... + 28792.

It is an arithmetic number, because the mean of its divisors is an integer number (48753040).

Almost surely, 2^194958493 is an apocalyptic number.

It is an amenable number.

194958493 is a deficient number, since it is larger than the sum of its proper divisors (53667).

194958493 is an equidigital number, since it uses as much as digits as its factorization.

194958493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53666.

The product of its digits is 1399680, while the sum is 52.

The square root of 194958493 is about 13962.7537756705. The cubic root of 194958493 is about 579.8478524817.

The spelling of 194958493 in words is "one hundred ninety-four million, nine hundred fifty-eight thousand, four hundred ninety-three".