1198983642 has 16 divisors (see below), whose sum is σ = 2407300992. Its totient is φ = 398105600.

The previous prime is 1198983641. The next prime is 1198983647. The reversal of 1198983642 is 2463898911.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1198983641) 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 7 ways as a sum of consecutive naturals, for example, 387234 + ... + 390317.

It is an arithmetic number, because the mean of its divisors is an integer number (150456312).

Almost surely, 2^1198983642 is an apocalyptic number.

1198983642 is an abundant number, since it is smaller than the sum of its proper divisors (1208317350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1198983642 is a wasteful number, since it uses less digits than its factorization.

1198983642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777813.

The product of its digits is 746496, while the sum is 51.

The square root of 1198983642 is about 34626.3431797237. The cubic root of 1198983642 is about 1062.3584729046.

The spelling of 1198983642 in words is "one billion, one hundred ninety-eight million, nine hundred eighty-three thousand, six hundred forty-two".