1961794799 has 2 divisors, whose sum is σ = 1961794800. Its totient is φ = 1961794798.

The previous prime is 1961794763. The next prime is 1961794801. The reversal of 1961794799 is 9974971691.

It is a strong prime.

It is an emirp because it is prime and its reverse (9974971691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1961794799 - 2¹² = 1961790703 is a prime.

It is a Sophie Germain prime.

Together with 1961794801, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1961794999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 980897399 + 980897400.

It is an arithmetic number, because the mean of its divisors is an integer number (980897400).

Almost surely, 2^1961794799 is an apocalyptic number.

1961794799 is a deficient number, since it is larger than the sum of its proper divisors (1).

1961794799 is an equidigital number, since it uses as much as digits as its factorization.

1961794799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7715736, while the sum is 62.

The square root of 1961794799 is about 44292.1527925659. The cubic root of 1961794799 is about 1251.8468271597.

The spelling of 1961794799 in words is "one billion, nine hundred sixty-one million, seven hundred ninety-four thousand, seven hundred ninety-nine".