20418364049 has 8 divisors (see below), whose sum is σ = 21002849280. Its totient is φ = 19835596656.

The previous prime is 20418364033. The next prime is 20418364061. The reversal of 20418364049 is 94046381402.

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

It is a cyclic number.

It is not a de Polignac number, because 20418364049 - 2⁴ = 20418364033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20418363997 and 20418364015.

It is not an unprimeable number, because it can be changed into a prime (20418364249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405329 + ... + 452910.

It is an arithmetic number, because the mean of its divisors is an integer number (2625356160).

Almost surely, 2^20418364049 is an apocalyptic number.

It is an amenable number.

20418364049 is a deficient number, since it is larger than the sum of its proper divisors (584485231).

20418364049 is an equidigital number, since it uses as much as digits as its factorization.

20418364049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858919.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 20418364049 in words is "twenty billion, four hundred eighteen million, three hundred sixty-four thousand, forty-nine".