1005319663 has 4 divisors (see below), whose sum is σ = 1005384688. Its totient is φ = 1005254640.

The previous prime is 1005319649. The next prime is 1005319723. The reversal of 1005319663 is 3669135001.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1005319663 - 2¹³ = 1005311471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005319603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5470 + ... + 45172.

It is an arithmetic number, because the mean of its divisors is an integer number (251346172).

Almost surely, 2^1005319663 is an apocalyptic number.

1005319663 is a deficient number, since it is larger than the sum of its proper divisors (65025).

1005319663 is an equidigital number, since it uses as much as digits as its factorization.

1005319663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65024.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 1005319663 is about 31706.7762946661. The cubic root of 1005319663 is about 1001.7700859471.

The spelling of 1005319663 in words is "one billion, five million, three hundred nineteen thousand, six hundred sixty-three".