3661791019 has 2 divisors, whose sum is σ = 3661791020. Its totient is φ = 3661791018.

The previous prime is 3661791013. The next prime is 3661791037. The reversal of 3661791019 is 9101971663.

3661791019 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3661791019 - 2⁵ = 3661790987 is a prime.

It is a super-2 number, since 2×3661791019² = 26817426933658116722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3661791013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1830895509 + 1830895510.

It is an arithmetic number, because the mean of its divisors is an integer number (1830895510).

Almost surely, 2^3661791019 is an apocalyptic number.

3661791019 is a deficient number, since it is larger than the sum of its proper divisors (1).

3661791019 is an equidigital number, since it uses as much as digits as its factorization.

3661791019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 3661791019 is about 60512.7343540184. The cubic root of 3661791019 is about 1541.3378797948.

The spelling of 3661791019 in words is "three billion, six hundred sixty-one million, seven hundred ninety-one thousand, nineteen".