3944057181 has 32 divisors (see below), whose sum is σ = 5696593920. Its totient is φ = 2420088000.

The previous prime is 3944057149. The next prime is 3944057189. The reversal of 3944057181 is 1817504493.

It is a happy number.

It is not a de Polignac number, because 3944057181 - 2⁵ = 3944057149 is a prime.

It is a super-2 number, since 2×3944057181² = 31111174093995333522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3944057189) 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 31 ways as a sum of consecutive naturals, for example, 377731 + ... + 388031.

It is an arithmetic number, because the mean of its divisors is an integer number (178018560).

Almost surely, 2^3944057181 is an apocalyptic number.

3944057181 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3944057181 is a deficient number, since it is larger than the sum of its proper divisors (1752536739).

3944057181 is a wasteful number, since it uses less digits than its factorization.

3944057181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10537.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 3944057181 is about 62801.7291242845. The cubic root of 3944057181 is about 1579.9659744048.

The spelling of 3944057181 in words is "three billion, nine hundred forty-four million, fifty-seven thousand, one hundred eighty-one".