18026841456 has 120 divisors (see below), whose sum is σ = 54691562016. Its totient is φ = 5509900800.

The previous prime is 18026841449. The next prime is 18026841461. The reversal of 18026841456 is 65414862081.

It is a happy number.

18026841456 is a `hidden beast` number, since 180 + 2 + 6 + 8 + 414 + 56 = 666.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 250786 + ... + 314558.

Almost surely, 2^18026841456 is an apocalyptic number.

18026841456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18026841456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27345781008).

18026841456 is an abundant number, since it is smaller than the sum of its proper divisors (36664720560).

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

18026841456 is a wasteful number, since it uses less digits than its factorization.

18026841456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63951 (or 63942 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 18026841456 in words is "eighteen billion, twenty-six million, eight hundred forty-one thousand, four hundred fifty-six".