1198115099 has 2 divisors, whose sum is σ = 1198115100. Its totient is φ = 1198115098.

The previous prime is 1198115089. The next prime is 1198115101. The reversal of 1198115099 is 9905118911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1198115099 - 2⁸ = 1198114843 is a prime.

Together with 1198115101, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1198115089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599057549 + 599057550.

It is an arithmetic number, because the mean of its divisors is an integer number (599057550).

Almost surely, 2^1198115099 is an apocalyptic number.

1198115099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1198115099 is an equidigital number, since it uses as much as digits as its factorization.

1198115099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 44.

The square root of 1198115099 is about 34613.7992569438. The cubic root of 1198115099 is about 1062.1018870001.

The spelling of 1198115099 in words is "one billion, one hundred ninety-eight million, one hundred fifteen thousand, ninety-nine".