1163005001 has 4 divisors (see below), whose sum is σ = 1174520004. Its totient is φ = 1151490000.

The previous prime is 1163004977. The next prime is 1163005049. The reversal of 1163005001 is 1005003611.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1138995001 + 24010000 = 33749^2 + 4900^2 .

It is a cyclic number.

It is not a de Polignac number, because 1163005001 - 2³⁰ = 89263177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1163005801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5757350 + ... + 5757551.

It is an arithmetic number, because the mean of its divisors is an integer number (293630001).

Almost surely, 2^1163005001 is an apocalyptic number.

It is an amenable number.

1163005001 is a deficient number, since it is larger than the sum of its proper divisors (11515003).

1163005001 is a wasteful number, since it uses less digits than its factorization.

1163005001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11515002.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1163005001 is about 34102.8591323367. The cubic root of 1163005001 is about 1051.6240931304.

Adding to 1163005001 its reverse (1005003611), we get a palindrome (2168008612).

The spelling of 1163005001 in words is "one billion, one hundred sixty-three million, five thousand, one".