194946645 has 16 divisors (see below), whose sum is σ = 312504192. Its totient is φ = 103775040.

The previous prime is 194946637. The next prime is 194946691. The reversal of 194946645 is 546649491.

It is not a de Polignac number, because 194946645 - 2³ = 194946637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 194946594 and 194946603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3897 + ... + 20126.

It is an arithmetic number, because the mean of its divisors is an integer number (19531512).

Almost surely, 2^194946645 is an apocalyptic number.

194946645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

194946645 is a deficient number, since it is larger than the sum of its proper divisors (117557547).

194946645 is a wasteful number, since it uses less digits than its factorization.

194946645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24572.

The product of its digits is 933120, while the sum is 48.

The square root of 194946645 is about 13962.3294976161. The cubic root of 194946645 is about 579.8361060899.

It can be divided in two parts, 194946 and 645, that added together give a palindrome (195591).

The spelling of 194946645 in words is "one hundred ninety-four million, nine hundred forty-six thousand, six hundred forty-five".