18072642484 has 12 divisors (see below), whose sum is σ = 34059980164. Its totient is φ = 8341219584.

The previous prime is 18072642481. The next prime is 18072642499. The reversal of 18072642484 is 48424627081.

It can be written as a sum of positive squares in 2 ways, for example, as 1834237584 + 16238404900 = 42828^2 + 127430^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18072642481) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 173775357 + ... + 173775460.

Almost surely, 2^18072642484 is an apocalyptic number.

It is an amenable number.

18072642484 is a deficient number, since it is larger than the sum of its proper divisors (15987337680).

18072642484 is a wasteful number, since it uses less digits than its factorization.

18072642484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347550834 (or 347550832 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 46.

The spelling of 18072642484 in words is "eighteen billion, seventy-two million, six hundred forty-two thousand, four hundred eighty-four".