1198443790 has 16 divisors (see below), whose sum is σ = 2187583200. Its totient is φ = 472625440.

The previous prime is 1198443769. The next prime is 1198443797. The reversal of 1198443790 is 973448911.

It is a self number, because there is not a number n which added to its sum of digits gives 1198443790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198443797) 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, 843265 + ... + 844684.

It is an arithmetic number, because the mean of its divisors is an integer number (136723950).

Almost surely, 2^1198443790 is an apocalyptic number.

1198443790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1198443790 is a deficient number, since it is larger than the sum of its proper divisors (989139410).

1198443790 is a wasteful number, since it uses less digits than its factorization.

1198443790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688027.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 1198443790 is about 34618.5469076910. The cubic root of 1198443790 is about 1062.1990038275.

The spelling of 1198443790 in words is "one billion, one hundred ninety-eight million, four hundred forty-three thousand, seven hundred ninety".