1641403241 has 2 divisors, whose sum is σ = 1641403242. Its totient is φ = 1641403240.

The previous prime is 1641403229. The next prime is 1641403271. The reversal of 1641403241 is 1423041461.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1571329600 + 70073641 = 39640^2 + 8371^2 .

It is a cyclic number.

It is not a de Polignac number, because 1641403241 - 2³⁰ = 567661417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1641403241.

It is not a weakly prime, because it can be changed into another prime (1641403271) 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, 820701620 + 820701621.

It is an arithmetic number, because the mean of its divisors is an integer number (820701621).

Almost surely, 2^1641403241 is an apocalyptic number.

It is an amenable number.

1641403241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641403241 is an equidigital number, since it uses as much as digits as its factorization.

1641403241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1641403241 is about 40514.2350415258. The cubic root of 1641403241 is about 1179.6099546347.

The spelling of 1641403241 in words is "one billion, six hundred forty-one million, four hundred three thousand, two hundred forty-one".