1663035841 has 2 divisors, whose sum is σ = 1663035842. Its totient is φ = 1663035840.

The previous prime is 1663035821. The next prime is 1663035859. The reversal of 1663035841 is 1485303661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1459545616 + 203490225 = 38204^2 + 14265^2 .

It is an emirp because it is prime and its reverse (1485303661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1663035841 - 2¹¹ = 1663033793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1663035841.

It is not a weakly prime, because it can be changed into another prime (1663035821) 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, 831517920 + 831517921.

It is an arithmetic number, because the mean of its divisors is an integer number (831517921).

Almost surely, 2^1663035841 is an apocalyptic number.

It is an amenable number.

1663035841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1663035841 is an equidigital number, since it uses as much as digits as its factorization.

1663035841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 1663035841 is about 40780.3364503041. The cubic root of 1663035841 is about 1184.7695115700.

The spelling of 1663035841 in words is "one billion, six hundred sixty-three million, thirty-five thousand, eight hundred forty-one".