1163813264 has 20 divisors (see below), whose sum is σ = 2255633904. Its totient is φ = 581714208.

The previous prime is 1163813257. The next prime is 1163813269. The reversal of 1163813264 is 4623183611.

It is a super-2 number, since 2×1163813264² = 2708922626924667392, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1163813269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46499 + ... + 67005.

Almost surely, 2^1163813264 is an apocalyptic number.

It is an amenable number.

1163813264 is a deficient number, since it is larger than the sum of its proper divisors (1091820640).

1163813264 is a wasteful number, since it uses less digits than its factorization.

1163813264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24062 (or 24056 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 1163813264 is about 34114.7074441508. The cubic root of 1163813264 is about 1051.8676552853.

Adding to 1163813264 its reverse (4623183611), we get a palindrome (5786996875).

The spelling of 1163813264 in words is "one billion, one hundred sixty-three million, eight hundred thirteen thousand, two hundred sixty-four".