1198718828 has 24 divisors (see below), whose sum is σ = 2179457280. Its totient is φ = 576195200.

The previous prime is 1198718827. The next prime is 1198718831. The reversal of 1198718828 is 8288178911.

It is a self number, because there is not a number n which added to its sum of digits gives 1198718828.

It is not an unprimeable number, because it can be changed into a prime (1198718827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4853 + ... + 49203.

It is an arithmetic number, because the mean of its divisors is an integer number (90810720).

Almost surely, 2^1198718828 is an apocalyptic number.

It is an amenable number.

1198718828 is a deficient number, since it is larger than the sum of its proper divisors (980738452).

1198718828 is a wasteful number, since it uses less digits than its factorization.

1198718828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44617 (or 44615 counting only the distinct ones).

The product of its digits is 516096, while the sum is 53.

The square root of 1198718828 is about 34622.5190880155. The cubic root of 1198718828 is about 1062.2802544032.

The spelling of 1198718828 in words is "one billion, one hundred ninety-eight million, seven hundred eighteen thousand, eight hundred twenty-eight".