20196118 has 4 divisors (see below), whose sum is σ = 30294180. Its totient is φ = 10098058.

The previous prime is 20196109. The next prime is 20196173. The reversal of 20196118 is 81169102.

It is a happy number.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 5049028 + ... + 5049031.

It is an arithmetic number, because the mean of its divisors is an integer number (7573545).

Almost surely, 2^20196118 is an apocalyptic number.

20196118 is a deficient number, since it is larger than the sum of its proper divisors (10098062).

20196118 is a wasteful number, since it uses less digits than its factorization.

20196118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10098061.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 20196118 is about 4494.0091232662. The cubic root of 20196118 is about 272.3261208720.

The spelling of 20196118 in words is "twenty million, one hundred ninety-six thousand, one hundred eighteen".