18228241746 has 144 divisors (see below), whose sum is σ = 47239751832. Its totient is φ = 5045483520.

The previous prime is 18228241709. The next prime is 18228241751. The reversal of 18228241746 is 64714282281.

18228241746 is a `hidden beast` number, since 1 + 8 + 228 + 2 + 417 + 4 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6246531225 + 11981710521 = 79035^2 + 109461^2 .

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 71 ways as a sum of consecutive naturals, for example, 2743140 + ... + 2749776.

Almost surely, 2^18228241746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18228241746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23619875916).

18228241746 is an abundant number, since it is smaller than the sum of its proper divisors (29011510086).

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

18228241746 is a wasteful number, since it uses less digits than its factorization.

18228241746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6777 (or 6763 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The spelling of 18228241746 in words is "eighteen billion, two hundred twenty-eight million, two hundred forty-one thousand, seven hundred forty-six".