1115163556 has 48 divisors (see below), whose sum is σ = 2205705600. Its totient is φ = 489468672.

The previous prime is 1115163541. The next prime is 1115163557. The reversal of 1115163556 is 6553615111.

It is not an unprimeable number, because it can be changed into a prime (1115163557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211480 + ... + 216688.

It is an arithmetic number, because the mean of its divisors is an integer number (45952200).

Almost surely, 2^1115163556 is an apocalyptic number.

It is an amenable number.

1115163556 is a deficient number, since it is larger than the sum of its proper divisors (1090542044).

1115163556 is a wasteful number, since it uses less digits than its factorization.

1115163556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5428 (or 5426 counting only the distinct ones).

The product of its digits is 13500, while the sum is 34.

The square root of 1115163556 is about 33394.0646822156. The cubic root of 1115163556 is about 1037.0018297563.

Adding to 1115163556 its reverse (6553615111), we get a palindrome (7668778667).

The spelling of 1115163556 in words is "one billion, one hundred fifteen million, one hundred sixty-three thousand, five hundred fifty-six".