1115163603 has 12 divisors (see below), whose sum is σ = 1705544568. Its totient is φ = 699710400.

The previous prime is 1115163601. The next prime is 1115163607. The reversal of 1115163603 is 3063615111.

1115163603 is a `hidden beast` number, since 1 + 1 + 1 + 51 + 6 + 3 + 603 = 666.

It is not a de Polignac number, because 1115163603 - 2¹ = 1115163601 is a prime.

It is a super-2 number, since 2×1115163603² = 2487179722911883218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1115163601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3644173 + ... + 3644478.

It is an arithmetic number, because the mean of its divisors is an integer number (142128714).

Almost surely, 2^1115163603 is an apocalyptic number.

1115163603 is a deficient number, since it is larger than the sum of its proper divisors (590380965).

1115163603 is a wasteful number, since it uses less digits than its factorization.

1115163603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7288674 (or 7288671 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 1115163603 is about 33394.0653859335. The cubic root of 1115163603 is about 1037.0018443249.

Adding to 1115163603 its reverse (3063615111), we get a palindrome (4178778714).

The spelling of 1115163603 in words is "one billion, one hundred fifteen million, one hundred sixty-three thousand, six hundred three".