20418682319 has 8 divisors (see below), whose sum is σ = 23362873248. Its totient is φ = 17481300480.

The previous prime is 20418682267. The next prime is 20418682357. The reversal of 20418682319 is 91328681402.

It is a happy number.

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

It is not a de Polignac number, because 20418682319 - 2²⁴ = 20401905103 is a prime.

It is a super-2 number, since 2×20418682319² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20418682319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20418682369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1695842 + ... + 1707839.

It is an arithmetic number, because the mean of its divisors is an integer number (2920359156).

Almost surely, 2^20418682319 is an apocalyptic number.

20418682319 is a deficient number, since it is larger than the sum of its proper divisors (2944190929).

20418682319 is an equidigital number, since it uses as much as digits as its factorization.

20418682319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404545.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 20418682319 in words is "twenty billion, four hundred eighteen million, six hundred eighty-two thousand, three hundred nineteen".