4081265729 has 8 divisors (see below), whose sum is σ = 4232088000. Its totient is φ = 3931116112.

The previous prime is 4081265623. The next prime is 4081265753. The reversal of 4081265729 is 9275621804.

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 4081265729 - 2⁸ = 4081265473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4081265729.

It is not an unprimeable number, because it can be changed into a prime (4081265029) 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, 155789 + ... + 180090.

It is an arithmetic number, because the mean of its divisors is an integer number (529011000).

Almost surely, 2^4081265729 is an apocalyptic number.

It is an amenable number.

4081265729 is a deficient number, since it is larger than the sum of its proper divisors (150822271).

4081265729 is a wasteful number, since it uses less digits than its factorization.

4081265729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336327.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 4081265729 is about 63884.7848004515. The cubic root of 4081265729 is about 1598.0791700607.

The spelling of 4081265729 in words is "four billion, eighty-one million, two hundred sixty-five thousand, seven hundred twenty-nine".