4095781971 has 24 divisors (see below), whose sum is σ = 5715958416. Its totient is φ = 2608531200.

The previous prime is 4095781927. The next prime is 4095781999. The reversal of 4095781971 is 1791875904.

It is a happy number.

It is not a de Polignac number, because 4095781971 - 2²² = 4091587667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4095781171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2273271 + ... + 2275071.

It is an arithmetic number, because the mean of its divisors is an integer number (238164934).

Almost surely, 2^4095781971 is an apocalyptic number.

4095781971 is a deficient number, since it is larger than the sum of its proper divisors (1620176445).

4095781971 is a wasteful number, since it uses less digits than its factorization.

4095781971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283 (or 3260 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 51.

The square root of 4095781971 is about 63998.2966257697. The cubic root of 4095781971 is about 1599.9716103036.

The spelling of 4095781971 in words is "four billion, ninety-five million, seven hundred eighty-one thousand, nine hundred seventy-one".