1168998611 has 4 divisors (see below), whose sum is σ = 1275271224. Its totient is φ = 1062726000.

The previous prime is 1168998583. The next prime is 1168998619.

1168998611 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1168998611 - 2¹⁰ = 1168997587 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1168998611.

It is not an unprimeable number, because it can be changed into a prime (1168998619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53136290 + ... + 53136311.

It is an arithmetic number, because the mean of its divisors is an integer number (318817806).

Almost surely, 2^1168998611 is an apocalyptic number.

1168998611 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1168998611 is a deficient number, since it is larger than the sum of its proper divisors (106272613).

1168998611 is a wasteful number, since it uses less digits than its factorization.

1168998611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106272612.

The product of its digits is 186624, while the sum is 50.

The square root of 1168998611 is about 34190.6216819759. The cubic root of 1168998611 is about 1053.4275327570.

The spelling of 1168998611 in words is "one billion, one hundred sixty-eight million, nine hundred ninety-eight thousand, six hundred eleven".