3873687791 has 2 divisors, whose sum is σ = 3873687792. Its totient is φ = 3873687790.

The previous prime is 3873687787. The next prime is 3873687827. The reversal of 3873687791 is 1977863783.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3873687791 - 2² = 3873687787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3873687791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3873687781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1936843895 + 1936843896.

It is an arithmetic number, because the mean of its divisors is an integer number (1936843896).

Almost surely, 2^3873687791 is an apocalyptic number.

3873687791 is a deficient number, since it is larger than the sum of its proper divisors (1).

3873687791 is an equidigital number, since it uses as much as digits as its factorization.

3873687791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10668672, while the sum is 59.

The square root of 3873687791 is about 62238.9571811739. The cubic root of 3873687791 is about 1570.5130094924.

The spelling of 3873687791 in words is "three billion, eight hundred seventy-three million, six hundred eighty-seven thousand, seven hundred ninety-one".