1163513065 has 32 divisors (see below), whose sum is σ = 1736816256. Its totient is φ = 735144960.

The previous prime is 1163513053. The next prime is 1163513077. The reversal of 1163513065 is 5603153611.

It is an interprime number because it is at equal distance from previous prime (1163513053) and next prime (1163513077).

It is a de Polignac number, because none of the positive numbers 2^k-1163513065 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35707 + ... + 60016.

It is an arithmetic number, because the mean of its divisors is an integer number (54275508).

Almost surely, 2^1163513065 is an apocalyptic number.

It is an amenable number.

1163513065 is a deficient number, since it is larger than the sum of its proper divisors (573303191).

1163513065 is a wasteful number, since it uses less digits than its factorization.

1163513065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95769.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 1163513065 is about 34110.3073131861. The cubic root of 1163513065 is about 1051.7772064186. Note that the first 3 decimals are identical.

Adding to 1163513065 its reverse (5603153611), we get a palindrome (6766666676).

The spelling of 1163513065 in words is "one billion, one hundred sixty-three million, five hundred thirteen thousand, sixty-five".