1198441856 has 32 divisors (see below), whose sum is σ = 2390170080. Its totient is φ = 598556160.

The previous prime is 1198441793. The next prime is 1198441987. The reversal of 1198441856 is 6581448911.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1198441856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122921 + ... + 132311.

It is an arithmetic number, because the mean of its divisors is an integer number (74692815).

Almost surely, 2^1198441856 is an apocalyptic number.

1198441856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1198441856 is a deficient number, since it is larger than the sum of its proper divisors (1191728224).

1198441856 is an frugal number, since it uses more digits than its factorization.

1198441856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10402 (or 10390 counting only the distinct ones).

The product of its digits is 276480, while the sum is 47.

The square root of 1198441856 is about 34618.5189746760. The cubic root of 1198441856 is about 1062.1984324493.

The spelling of 1198441856 in words is "one billion, one hundred ninety-eight million, four hundred forty-one thousand, eight hundred fifty-six".