1641797363 has 2 divisors, whose sum is σ = 1641797364. Its totient is φ = 1641797362.

The previous prime is 1641797359. The next prime is 1641797393. The reversal of 1641797363 is 3637971461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1641797363 - 2² = 1641797359 is a prime.

It is not a weakly prime, because it can be changed into another prime (1641797393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820898681 + 820898682.

It is an arithmetic number, because the mean of its divisors is an integer number (820898682).

Almost surely, 2^1641797363 is an apocalyptic number.

1641797363 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641797363 is an equidigital number, since it uses as much as digits as its factorization.

1641797363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 47.

The square root of 1641797363 is about 40519.0987436789. The cubic root of 1641797363 is about 1179.7043602460.

The spelling of 1641797363 in words is "one billion, six hundred forty-one million, seven hundred ninety-seven thousand, three hundred sixty-three".