3950020081 has 8 divisors (see below), whose sum is σ = 4669974720. Its totient is φ = 3268981968.

The previous prime is 3950020051. The next prime is 3950020097. The reversal of 3950020081 is 1800200593.

3950020081 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3950020081 - 2⁹ = 3950019569 is a prime.

It is a super-2 number, since 2×3950020081² = 31205317280606493122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3950020051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9728911 + ... + 9729316.

It is an arithmetic number, because the mean of its divisors is an integer number (583746840).

Almost surely, 2^3950020081 is an apocalyptic number.

It is an amenable number.

3950020081 is a deficient number, since it is larger than the sum of its proper divisors (719954639).

3950020081 is a wasteful number, since it uses less digits than its factorization.

3950020081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19458263.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 3950020081 is about 62849.1852055379. The cubic root of 3950020081 is about 1580.7618076290.

The spelling of 3950020081 in words is "three billion, nine hundred fifty million, twenty thousand, eighty-one".