1641303663 has 8 divisors (see below), whose sum is σ = 2219227776. Its totient is φ = 1078791000.

The previous prime is 1641303647. The next prime is 1641303701. The reversal of 1641303663 is 3663031461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1641303663 - 2⁴ = 1641303647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641303563) 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 in 7 ways as a sum of consecutive naturals, for example, 3852613 + ... + 3853038.

It is an arithmetic number, because the mean of its divisors is an integer number (277403472).

Almost surely, 2^1641303663 is an apocalyptic number.

1641303663 is a deficient number, since it is larger than the sum of its proper divisors (577924113).

1641303663 is an equidigital number, since it uses as much as digits as its factorization.

1641303663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7705725.

The product of its (nonzero) digits is 23328, while the sum is 33.

The square root of 1641303663 is about 40513.0060968080. The cubic root of 1641303663 is about 1179.5860999286.

The spelling of 1641303663 in words is "one billion, six hundred forty-one million, three hundred three thousand, six hundred sixty-three".