18026284644 has 45 divisors (see below), whose sum is σ = 47130587427. Its totient is φ = 6007955976.

The previous prime is 18026284579. The next prime is 18026284649. The reversal of 18026284644 is 44648262081.

The square root of 18026284644 is 134262.

It is a perfect power (a square), and thus also a powerful number.

18026284644 is a `hidden beast` number, since 18 + 0 + 2 + 628 + 4 + 6 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18026284644.

It is not an unprimeable number, because it can be changed into a prime (18026284649) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2412987 + ... + 2420445.

Almost surely, 2^18026284644 is an apocalyptic number.

18026284644 is the 134262-nd square number.

It is an amenable number.

18026284644 is an abundant number, since it is smaller than the sum of its proper divisors (29104302783).

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

18026284644 is an frugal number, since it uses more digits than its factorization.

18026284644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14934 (or 7464 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 45.

The spelling of 18026284644 in words is "eighteen billion, twenty-six million, two hundred eighty-four thousand, six hundred forty-four".