194035681 has 8 divisors (see below), whose sum is σ = 221840640. Its totient is φ = 166252128.

The previous prime is 194035663. The next prime is 194035711. The reversal of 194035681 is 186530491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-194035681 is a prime.

It is a super-2 number, since 2×194035681² = 75299691002267522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 194035681.

It is not an unprimeable number, because it can be changed into a prime (194035081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27720 + ... + 34006.

It is an arithmetic number, because the mean of its divisors is an integer number (27730080).

Almost surely, 2^194035681 is an apocalyptic number.

It is an amenable number.

194035681 is a deficient number, since it is larger than the sum of its proper divisors (27804959).

194035681 is an equidigital number, since it uses as much as digits as its factorization.

194035681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10703.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 194035681 is about 13929.6690915470. The cubic root of 194035681 is about 578.9315257342.

The spelling of 194035681 in words is "one hundred ninety-four million, thirty-five thousand, six hundred eighty-one".