18020416418 has 8 divisors (see below), whose sum is σ = 28205869248. Its totient is φ = 8618460004.

The previous prime is 18020416417. The next prime is 18020416439. The reversal of 18020416418 is 81461402081.

It is a happy number.

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 (18020416417) 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, 195874046 + ... + 195874137.

It is an arithmetic number, because the mean of its divisors is an integer number (3525733656).

Almost surely, 2^18020416418 is an apocalyptic number.

18020416418 is a deficient number, since it is larger than the sum of its proper divisors (10185452830).

18020416418 is a wasteful number, since it uses less digits than its factorization.

18020416418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391748208.

The product of its (nonzero) digits is 12288, while the sum is 35.

Adding to 18020416418 its reverse (81461402081), we get a palindrome (99481818499).

The spelling of 18020416418 in words is "eighteen billion, twenty million, four hundred sixteen thousand, four hundred eighteen".