1002165663 has 8 divisors (see below), whose sum is σ = 1338046768. Its totient is φ = 667197504.

The previous prime is 1002165653. The next prime is 1002165667. The reversal of 1002165663 is 3665612001.

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

It is not a de Polignac number, because 1002165663 - 2⁶ = 1002165599 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 1002165663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002165667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225670 + ... + 230067.

It is an arithmetic number, because the mean of its divisors is an integer number (167255846).

Almost surely, 2^1002165663 is an apocalyptic number.

1002165663 is a deficient number, since it is larger than the sum of its proper divisors (335881105).

1002165663 is an equidigital number, since it uses as much as digits as its factorization.

1002165663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456473.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1002165663 is about 31657.0002211201. Note that the first 3 decimals coincide. The cubic root of 1002165663 is about 1000.7213671709.

Adding to 1002165663 its reverse (3665612001), we get a palindrome (4667777664).

The spelling of 1002165663 in words is "one billion, two million, one hundred sixty-five thousand, six hundred sixty-three".