1115163566 has 16 divisors (see below), whose sum is σ = 1859245488. Its totient is φ = 497328000.

The previous prime is 1115163557. The next prime is 1115163583. The reversal of 1115163566 is 6653615111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477035 + ... + 479366.

It is an arithmetic number, because the mean of its divisors is an integer number (116202843).

Almost surely, 2^1115163566 is an apocalyptic number.

1115163566 is a deficient number, since it is larger than the sum of its proper divisors (744081922).

1115163566 is a wasteful number, since it uses less digits than its factorization.

1115163566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956467.

The product of its digits is 16200, while the sum is 35.

The square root of 1115163566 is about 33394.0648319428. The cubic root of 1115163566 is about 1037.0018328560.

Adding to 1115163566 its reverse (6653615111), we get a palindrome (7768778677).

The spelling of 1115163566 in words is "one billion, one hundred fifteen million, one hundred sixty-three thousand, five hundred sixty-six".