1916338049 has 2 divisors, whose sum is σ = 1916338050. Its totient is φ = 1916338048.

The previous prime is 1916338033. The next prime is 1916338069. The reversal of 1916338049 is 9408336191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1192459024 + 723879025 = 34532^2 + 26905^2 .

It is a cyclic number.

It is not a de Polignac number, because 1916338049 - 2⁴ = 1916338033 is a prime.

It is not a weakly prime, because it can be changed into another prime (1916338019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 958169024 + 958169025.

It is an arithmetic number, because the mean of its divisors is an integer number (958169025).

Almost surely, 2^1916338049 is an apocalyptic number.

It is an amenable number.

1916338049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1916338049 is an equidigital number, since it uses as much as digits as its factorization.

1916338049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 1916338049 is about 43775.9985494335. The cubic root of 1916338049 is about 1242.1023235745.

The spelling of 1916338049 in words is "one billion, nine hundred sixteen million, three hundred thirty-eight thousand, forty-nine".