1198668911 has 8 divisors (see below), whose sum is σ = 1315663104. Its totient is φ = 1083012120.

The previous prime is 1198668901. The next prime is 1198668917.

1198668911 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1198668911 - 2¹⁸ = 1198406767 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 1198668911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198668917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332471 + ... + 336056.

It is an arithmetic number, because the mean of its divisors is an integer number (164457888).

Almost surely, 2^1198668911 is an apocalyptic number.

1198668911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1198668911 is a deficient number, since it is larger than the sum of its proper divisors (116994193).

1198668911 is a wasteful number, since it uses less digits than its factorization.

1198668911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668701.

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

The square root of 1198668911 is about 34621.7982057547. The cubic root of 1198668911 is about 1062.2655090550.

The spelling of 1198668911 in words is "one billion, one hundred ninety-eight million, six hundred sixty-eight thousand, nine hundred eleven".