1198268919 has 24 divisors (see below), whose sum is σ = 1855863360. Its totient is φ = 742330368.

The previous prime is 1198268899. The next prime is 1198268923. The reversal of 1198268919 is 9198628911.

It is not a de Polignac number, because 1198268919 - 2⁵ = 1198268887 is a prime.

It is a super-2 number, since 2×1198268919² = 2871696804482857122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198268959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37482 + ... + 61655.

It is an arithmetic number, because the mean of its divisors is an integer number (77327640).

Almost surely, 2^1198268919 is an apocalyptic number.

1198268919 is a deficient number, since it is larger than the sum of its proper divisors (657594441).

1198268919 is a wasteful number, since it uses less digits than its factorization.

1198268919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99239 (or 99236 counting only the distinct ones).

The product of its digits is 559872, while the sum is 54.

The square root of 1198268919 is about 34616.0211318401. The cubic root of 1198268919 is about 1062.1473377033.

The spelling of 1198268919 in words is "one billion, one hundred ninety-eight million, two hundred sixty-eight thousand, nine hundred nineteen".