1191118519 has 2 divisors, whose sum is σ = 1191118520. Its totient is φ = 1191118518.

The previous prime is 1191118499. The next prime is 1191118529. The reversal of 1191118519 is 9158111911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1191118519 - 2⁹ = 1191118007 is a prime.

It is a super-2 number, since 2×1191118519² = 2837526652609506722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1191118529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 595559259 + 595559260.

It is an arithmetic number, because the mean of its divisors is an integer number (595559260).

Almost surely, 2^1191118519 is an apocalyptic number.

1191118519 is a deficient number, since it is larger than the sum of its proper divisors (1).

1191118519 is an equidigital number, since it uses as much as digits as its factorization.

1191118519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 37.

The square root of 1191118519 is about 34512.5849365127. The cubic root of 1191118519 is about 1060.0304129757.

The spelling of 1191118519 in words is "one billion, one hundred ninety-one million, one hundred eighteen thousand, five hundred nineteen".