3946641128 has 16 divisors (see below), whose sum is σ = 7400954880. Its totient is φ = 1973053168.

The previous prime is 3946641091. The next prime is 3946641133. The reversal of 3946641128 is 8211466493.

It is a super-2 number, since 2×3946641128² = 31151952386442224768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38375 + ... + 96777.

It is an arithmetic number, because the mean of its divisors is an integer number (462559680).

Almost surely, 2^3946641128 is an apocalyptic number.

It is an amenable number.

3946641128 is a deficient number, since it is larger than the sum of its proper divisors (3454313752).

3946641128 is a wasteful number, since it uses less digits than its factorization.

3946641128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66856 (or 66852 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 3946641128 is about 62822.2980159115. The cubic root of 3946641128 is about 1580.3109370424.

The spelling of 3946641128 in words is "three billion, nine hundred forty-six million, six hundred forty-one thousand, one hundred twenty-eight".