68194181 has 8 divisors (see below), whose sum is σ = 74503200. Its totient is φ = 61903440.

The previous prime is 68194177. The next prime is 68194183. The reversal of 68194181 is 18149186.

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

It is a cyclic number.

It is not a de Polignac number, because 68194181 - 2² = 68194177 is a prime.

It is a super-2 number, since 2×68194181² = 9300892644521522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68194183) 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, 3935 + ... + 12323.

It is an arithmetic number, because the mean of its divisors is an integer number (9312900).

Almost surely, 2^68194181 is an apocalyptic number.

It is an amenable number.

68194181 is a deficient number, since it is larger than the sum of its proper divisors (6309019).

68194181 is a wasteful number, since it uses less digits than its factorization.

68194181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9139.

The product of its digits is 13824, while the sum is 38.

The square root of 68194181 is about 8257.9768103331. The cubic root of 68194181 is about 408.5536605019.

The spelling of 68194181 in words is "sixty-eight million, one hundred ninety-four thousand, one hundred eighty-one".