73994181 has 8 divisors (see below), whose sum is σ = 98728800. Its totient is φ = 49294512.

The previous prime is 73994147. The next prime is 73994209. The reversal of 73994181 is 18149937.

It is a happy number.

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

It is not a de Polignac number, because 73994181 - 2¹⁷ = 73863109 is a prime.

It is a super-2 number, since 2×73994181² = 10950277643721522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73994101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3315 + ... + 12608.

It is an arithmetic number, because the mean of its divisors is an integer number (12341100).

Almost surely, 2^73994181 is an apocalyptic number.

It is an amenable number.

73994181 is a deficient number, since it is larger than the sum of its proper divisors (24734619).

73994181 is a wasteful number, since it uses less digits than its factorization.

73994181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17475.

The product of its digits is 54432, while the sum is 42.

The square root of 73994181 is about 8601.9870378884. The cubic root of 73994181 is about 419.8226405339.

The spelling of 73994181 in words is "seventy-three million, nine hundred ninety-four thousand, one hundred eighty-one".