20418194 has 8 divisors (see below), whose sum is σ = 30699648. Its totient is φ = 10184980.

The previous prime is 20418193. The next prime is 20418199. The reversal of 20418194 is 49181402.

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

It is not an unprimeable number, because it can be changed into a prime (20418193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10982 + ... + 12705.

It is an arithmetic number, because the mean of its divisors is an integer number (3837456).

Almost surely, 2^20418194 is an apocalyptic number.

20418194 is a deficient number, since it is larger than the sum of its proper divisors (10281454).

20418194 is a wasteful number, since it uses less digits than its factorization.

20418194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24120.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 20418194 is about 4518.6495770307. The cubic root of 20418194 is about 273.3206481653.

Adding to 20418194 its reverse (49181402), we get a palindrome (69599596).

The spelling of 20418194 in words is "twenty million, four hundred eighteen thousand, one hundred ninety-four".