1196891998 has 8 divisors (see below), whose sum is σ = 1795952808. Its totient is φ = 598241064.

The previous prime is 1196891977. The next prime is 1196892001. The reversal of 1196891998 is 8991986911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95061 + ... + 106912.

It is an arithmetic number, because the mean of its divisors is an integer number (224494101).

Almost surely, 2^1196891998 is an apocalyptic number.

1196891998 is a deficient number, since it is larger than the sum of its proper divisors (599060810).

1196891998 is a wasteful number, since it uses less digits than its factorization.

1196891998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204938.

The product of its digits is 2519424, while the sum is 61.

The square root of 1196891998 is about 34596.1269219547. The cubic root of 1196891998 is about 1061.7403468382.

The spelling of 1196891998 in words is "one billion, one hundred ninety-six million, eight hundred ninety-one thousand, nine hundred ninety-eight".