1940198118 has 8 divisors (see below), whose sum is σ = 3880396248. Its totient is φ = 646732704.

The previous prime is 1940198111. The next prime is 1940198159. The reversal of 1940198118 is 8118910491.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1940198118 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1940198118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940198111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161683171 + ... + 161683182.

It is an arithmetic number, because the mean of its divisors is an integer number (485049531).

Almost surely, 2^1940198118 is an apocalyptic number.

1940198118 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1940198118 is a wasteful number, since it uses less digits than its factorization.

1940198118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323366358.

The product of its (nonzero) digits is 20736, while the sum is 42.

The square root of 1940198118 is about 44047.6800524159. The cubic root of 1940198118 is about 1247.2361586220.

The spelling of 1940198118 in words is "one billion, nine hundred forty million, one hundred ninety-eight thousand, one hundred eighteen".