1941116609 has 2 divisors, whose sum is σ = 1941116610. Its totient is φ = 1941116608.

The previous prime is 1941116561. The next prime is 1941116689. The reversal of 1941116609 is 9066111491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1501795009 + 439321600 = 38753^2 + 20960^2 .

It is an emirp because it is prime and its reverse (9066111491) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1941116609 is a prime.

It is not a weakly prime, because it can be changed into another prime (1941116689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970558304 + 970558305.

It is an arithmetic number, because the mean of its divisors is an integer number (970558305).

Almost surely, 2^1941116609 is an apocalyptic number.

It is an amenable number.

1941116609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1941116609 is an equidigital number, since it uses as much as digits as its factorization.

1941116609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 1941116609 is about 44058.1049183916. The cubic root of 1941116609 is about 1247.4329416982.

The spelling of 1941116609 in words is "one billion, nine hundred forty-one million, one hundred sixteen thousand, six hundred nine".