1994968049 has 2 divisors, whose sum is σ = 1994968050. Its totient is φ = 1994968048.

The previous prime is 1994968007. The next prime is 1994968051. The reversal of 1994968049 is 9408694991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1923261025 + 71707024 = 43855^2 + 8468^2 .

It is a cyclic number.

It is not a de Polignac number, because 1994968049 - 2¹² = 1994963953 is a prime.

Together with 1994968051, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1994962049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997484024 + 997484025.

It is an arithmetic number, because the mean of its divisors is an integer number (997484025).

Almost surely, 2^1994968049 is an apocalyptic number.

It is an amenable number.

1994968049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1994968049 is an equidigital number, since it uses as much as digits as its factorization.

1994968049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5038848, while the sum is 59.

The square root of 1994968049 is about 44665.0651964150. The cubic root of 1994968049 is about 1258.8635189933.

The spelling of 1994968049 in words is "one billion, nine hundred ninety-four million, nine hundred sixty-eight thousand, forty-nine".