194455613 has 4 divisors (see below), whose sum is σ = 212133408. Its totient is φ = 176777820.

The previous prime is 194455559. The next prime is 194455619. The reversal of 194455613 is 316554491.

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 194455613 - 2¹⁸ = 194193469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194455619) 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, 8838881 + ... + 8838902.

It is an arithmetic number, because the mean of its divisors is an integer number (53033352).

Almost surely, 2^194455613 is an apocalyptic number.

It is an amenable number.

194455613 is a deficient number, since it is larger than the sum of its proper divisors (17677795).

194455613 is a wasteful number, since it uses less digits than its factorization.

194455613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17677794.

The product of its digits is 64800, while the sum is 38.

The square root of 194455613 is about 13944.7342391313. The cubic root of 194455613 is about 579.3488659916.

The spelling of 194455613 in words is "one hundred ninety-four million, four hundred fifty-five thousand, six hundred thirteen".