20190118 has 24 divisors (see below), whose sum is σ = 34659072. Its totient is φ = 8767104.

The previous prime is 20190097. The next prime is 20190161. The reversal of 20190118 is 81109102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6171 + ... + 8857.

It is an arithmetic number, because the mean of its divisors is an integer number (1444128).

Almost surely, 2^20190118 is an apocalyptic number.

20190118 is a deficient number, since it is larger than the sum of its proper divisors (14468954).

20190118 is a wasteful number, since it uses less digits than its factorization.

20190118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2736 (or 2719 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 20190118 is about 4493.3415182913. The cubic root of 20190118 is about 272.2991500360.

The spelling of 20190118 in words is "twenty million, one hundred ninety thousand, one hundred eighteen".