1109198166 has 32 divisors (see below), whose sum is σ = 2311400448. Its totient is φ = 354455520.

The previous prime is 1109198143. The next prime is 1109198191. The reversal of 1109198166 is 6618919011.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7965 + ... + 47768.

It is an arithmetic number, because the mean of its divisors is an integer number (72231264).

Almost surely, 2^1109198166 is an apocalyptic number.

1109198166 is an abundant number, since it is smaller than the sum of its proper divisors (1202202282).

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

1109198166 is a wasteful number, since it uses less digits than its factorization.

1109198166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55876.

The product of its (nonzero) digits is 23328, while the sum is 42.

The square root of 1109198166 is about 33304.6267956871. The cubic root of 1109198166 is about 1035.1494306871.

The spelling of 1109198166 in words is "one billion, one hundred nine million, one hundred ninety-eight thousand, one hundred sixty-six".