194424481 has 4 divisors (see below), whose sum is σ = 194454832. Its totient is φ = 194394132.

The previous prime is 194424479. The next prime is 194424521. The reversal of 194424481 is 184424491.

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: 184424491 = 1447 ⋅127453.

It is a cyclic number.

It is not a de Polignac number, because 194424481 - 2¹ = 194424479 is a prime.

It is a super-2 number, since 2×194424481² = 75601757624238722, which contains 22 as substring.

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 194424481.

It is not an unprimeable number, because it can be changed into a prime (194424401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1395 + ... + 19768.

It is an arithmetic number, because the mean of its divisors is an integer number (48613708).

Almost surely, 2^194424481 is an apocalyptic number.

It is an amenable number.

194424481 is a deficient number, since it is larger than the sum of its proper divisors (30351).

194424481 is an equidigital number, since it uses as much as digits as its factorization.

194424481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30350.

The product of its digits is 36864, while the sum is 37.

The square root of 194424481 is about 13943.6179307954. The cubic root of 194424481 is about 579.3179467649.

The spelling of 194424481 in words is "one hundred ninety-four million, four hundred twenty-four thousand, four hundred eighty-one".