4173728081 has 8 divisors (see below), whose sum is σ = 4394436000. Its totient is φ = 3953124000.

The previous prime is 4173728077. The next prime is 4173728087. The reversal of 4173728081 is 1808273714.

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 4173728081 - 2² = 4173728077 is a prime.

It is a super-2 number, since 2×4173728081² = 34840012188255885122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4173728087) 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, 64706 + ... + 111956.

It is an arithmetic number, because the mean of its divisors is an integer number (549304500).

Almost surely, 2^4173728081 is an apocalyptic number.

It is an amenable number.

4173728081 is a deficient number, since it is larger than the sum of its proper divisors (220707919).

4173728081 is a wasteful number, since it uses less digits than its factorization.

4173728081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51919.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 4173728081 is about 64604.3967621400. The cubic root of 4173728081 is about 1610.0574907136.

The spelling of 4173728081 in words is "four billion, one hundred seventy-three million, seven hundred twenty-eight thousand, eighty-one".