1117968618 has 64 divisors (see below), whose sum is σ = 2498428800. Its totient is φ = 331134720.

The previous prime is 1117968601. The next prime is 1117968619. The reversal of 1117968618 is 8168697111.

It is not an unprimeable number, because it can be changed into a prime (1117968619) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1150873 + ... + 1151843.

It is an arithmetic number, because the mean of its divisors is an integer number (39037950).

Almost surely, 2^1117968618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1117968618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1249214400).

1117968618 is an abundant number, since it is smaller than the sum of its proper divisors (1380460182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1117968618 is a wasteful number, since it uses less digits than its factorization.

1117968618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527.

The product of its digits is 145152, while the sum is 48.

The square root of 1117968618 is about 33436.0377138201. The cubic root of 1117968618 is about 1037.8705868858.

It can be divided in two parts, 11179 and 68618, that added together give a palindrome (79797).

The spelling of 1117968618 in words is "one billion, one hundred seventeen million, nine hundred sixty-eight thousand, six hundred eighteen".