1198518863 has 2 divisors, whose sum is σ = 1198518864. Its totient is φ = 1198518862.

The previous prime is 1198518857. The next prime is 1198518889. The reversal of 1198518863 is 3688158911.

It is a weak prime.

It is an emirp because it is prime and its reverse (3688158911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1198518863 - 2¹⁰ = 1198517839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1198518263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599259431 + 599259432.

It is an arithmetic number, because the mean of its divisors is an integer number (599259432).

Almost surely, 2^1198518863 is an apocalyptic number.

1198518863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1198518863 is an equidigital number, since it uses as much as digits as its factorization.

1198518863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 50.

The square root of 1198518863 is about 34619.6311794334. The cubic root of 1198518863 is about 1062.2211828126.

The spelling of 1198518863 in words is "one billion, one hundred ninety-eight million, five hundred eighteen thousand, eight hundred sixty-three".