1330163643 has 4 divisors (see below), whose sum is σ = 1773551528. Its totient is φ = 886775760.

The previous prime is 1330163581. The next prime is 1330163699. The reversal of 1330163643 is 3463610331.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1330163643 - 2¹³ = 1330155451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1330163643.

It is not an unprimeable number, because it can be changed into a prime (1330163143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221693938 + ... + 221693943.

It is an arithmetic number, because the mean of its divisors is an integer number (443387882).

Almost surely, 2^1330163643 is an apocalyptic number.

1330163643 is a deficient number, since it is larger than the sum of its proper divisors (443387885).

1330163643 is an equidigital number, since it uses as much as digits as its factorization.

1330163643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443387884.

The product of its (nonzero) digits is 11664, while the sum is 30.

The square root of 1330163643 is about 36471.4085689050. The cubic root of 1330163643 is about 1099.7695503468.

Adding to 1330163643 its reverse (3463610331), we get a palindrome (4793773974).

The spelling of 1330163643 in words is "one billion, three hundred thirty million, one hundred sixty-three thousand, six hundred forty-three".