18920410344 has 96 divisors (see below), whose sum is σ = 55943727840. Its totient is φ = 5729097600.

The previous prime is 18920410337. The next prime is 18920410357. The reversal of 18920410344 is 44301402981.

It is a happy number.

18920410344 is a `hidden beast` number, since 189 + 20 + 410 + 3 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 18920410299 and 18920410308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1121814 + ... + 1138554.

It is an arithmetic number, because the mean of its divisors is an integer number (582747165).

Almost surely, 2^18920410344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18920410344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27971863920).

18920410344 is an abundant number, since it is smaller than the sum of its proper divisors (37023317496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18920410344 is a wasteful number, since it uses less digits than its factorization.

18920410344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18191 (or 18184 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 18920410344 in words is "eighteen billion, nine hundred twenty million, four hundred ten thousand, three hundred forty-four".