1089795198 has 16 divisors (see below), whose sum is σ = 2294305920. Its totient is φ = 344145816.

The previous prime is 1089795193. The next prime is 1089795209. The reversal of 1089795198 is 8915979801.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089795191) 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, 4779690 + ... + 4779917.

It is an arithmetic number, because the mean of its divisors is an integer number (143394120).

Almost surely, 2^1089795198 is an apocalyptic number.

1089795198 is an abundant number, since it is smaller than the sum of its proper divisors (1204510722).

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

1089795198 is a wasteful number, since it uses less digits than its factorization.

1089795198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9559631.

The product of its (nonzero) digits is 1632960, while the sum is 57.

The square root of 1089795198 is about 33012.0462558745. The cubic root of 1089795198 is about 1029.0780067435.

The spelling of 1089795198 in words is "one billion, eighty-nine million, seven hundred ninety-five thousand, one hundred ninety-eight".