1198799163 has 16 divisors (see below), whose sum is σ = 1783971840. Its totient is φ = 795611592.

The previous prime is 1198799159. The next prime is 1198799177. The reversal of 1198799163 is 3619978911.

It is a happy number.

It is not a de Polignac number, because 1198799163 - 2² = 1198799159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1198799143) 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 15 ways as a sum of consecutive naturals, for example, 93531 + ... + 105572.

It is an arithmetic number, because the mean of its divisors is an integer number (111498240).

Almost surely, 2^1198799163 is an apocalyptic number.

1198799163 is a deficient number, since it is larger than the sum of its proper divisors (585172677).

1198799163 is a wasteful number, since it uses less digits than its factorization.

1198799163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199335 (or 199329 counting only the distinct ones).

The product of its digits is 734832, while the sum is 54.

The square root of 1198799163 is about 34623.6792239069. The cubic root of 1198799163 is about 1062.3039842877.

The spelling of 1198799163 in words is "one billion, one hundred ninety-eight million, seven hundred ninety-nine thousand, one hundred sixty-three".