4081968956 has 12 divisors (see below), whose sum is σ = 7692941592. Its totient is φ = 1883985648.

The previous prime is 4081968899. The next prime is 4081968971. The reversal of 4081968956 is 6598691804.

It is a happy number.

It is a congruent number.

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, 39249650 + ... + 39249753.

It is an arithmetic number, because the mean of its divisors is an integer number (641078466).

Almost surely, 2^4081968956 is an apocalyptic number.

It is an amenable number.

4081968956 is a deficient number, since it is larger than the sum of its proper divisors (3610972636).

4081968956 is a wasteful number, since it uses less digits than its factorization.

4081968956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78499420 (or 78499418 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 56.

The square root of 4081968956 is about 63890.2884325936. The cubic root of 4081968956 is about 1598.1709510550.

The spelling of 4081968956 in words is "four billion, eighty-one million, nine hundred sixty-eight thousand, nine hundred fifty-six".