1005643163 has 8 divisors (see below), whose sum is σ = 1160686560. Its totient is φ = 853444800.

The previous prime is 1005643127. The next prime is 1005643169. The reversal of 1005643163 is 3613465001.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1005643163 - 2¹⁴ = 1005626779 is a prime.

It is a super-2 number, since 2×1005643163² = 2022636342577289138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005643169) 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 7 ways as a sum of consecutive naturals, for example, 710498 + ... + 711911.

It is an arithmetic number, because the mean of its divisors is an integer number (145085820).

Almost surely, 2^1005643163 is an apocalyptic number.

1005643163 is a deficient number, since it is larger than the sum of its proper divisors (155043397).

1005643163 is a wasteful number, since it uses less digits than its factorization.

1005643163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422517.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1005643163 is about 31711.8773174973. The cubic root of 1005643163 is about 1001.8775270195.

The spelling of 1005643163 in words is "one billion, five million, six hundred forty-three thousand, one hundred sixty-three".