1198868993 has 4 divisors (see below), whose sum is σ = 1370136000. Its totient is φ = 1027601988.

The previous prime is 1198868977. The next prime is 1198869029. The reversal of 1198868993 is 3998688911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1198868993 - 2⁴ = 1198868977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1198868953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85633493 + ... + 85633506.

It is an arithmetic number, because the mean of its divisors is an integer number (342534000).

Almost surely, 2^1198868993 is an apocalyptic number.

It is an amenable number.

1198868993 is a deficient number, since it is larger than the sum of its proper divisors (171267007).

1198868993 is an equidigital number, since it uses as much as digits as its factorization.

1198868993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171267006.

The product of its digits is 6718464, while the sum is 62.

The square root of 1198868993 is about 34624.6876231396. The cubic root of 1198868993 is about 1062.3246102745.

The spelling of 1198868993 in words is "one billion, one hundred ninety-eight million, eight hundred sixty-eight thousand, nine hundred ninety-three".