1641163259 has 2 divisors, whose sum is σ = 1641163260. Its totient is φ = 1641163258.

The previous prime is 1641163253. The next prime is 1641163261. The reversal of 1641163259 is 9523611461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1641163259 - 2⁴ = 1641163243 is a prime.

Together with 1641163261, 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 (1641163253) 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, 820581629 + 820581630.

It is an arithmetic number, because the mean of its divisors is an integer number (820581630).

Almost surely, 2^1641163259 is an apocalyptic number.

1641163259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641163259 is an equidigital number, since it uses as much as digits as its factorization.

1641163259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 38.

The square root of 1641163259 is about 40511.2732335087. The cubic root of 1641163259 is about 1179.5524633885.

The spelling of 1641163259 in words is "one billion, six hundred forty-one million, one hundred sixty-three thousand, two hundred fifty-nine".