3791975989 has 2 divisors, whose sum is σ = 3791975990. Its totient is φ = 3791975988.

The previous prime is 3791975923. The next prime is 3791976011. The reversal of 3791975989 is 9895791973.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3787417764 + 4558225 = 61542^2 + 2135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3791975989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3791975909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1895987994 + 1895987995.

It is an arithmetic number, because the mean of its divisors is an integer number (1895987995).

Almost surely, 2^3791975989 is an apocalyptic number.

It is an amenable number.

3791975989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3791975989 is an equidigital number, since it uses as much as digits as its factorization.

3791975989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38578680, while the sum is 67.

The square root of 3791975989 is about 61579.0223127974. The cubic root of 3791975989 is about 1559.3916087237.

The spelling of 3791975989 in words is "three billion, seven hundred ninety-one million, nine hundred seventy-five thousand, nine hundred eighty-nine".