18248761472 has 16 divisors (see below), whose sum is σ = 36354954750. Its totient is φ = 9124380672.

The previous prime is 18248761471. The next prime is 18248761493. The reversal of 18248761472 is 27416784281.

It can be written as a sum of positive squares in only one way, i.e., 12910413376 + 5338348096 = 113624^2 + 73064^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 18248761472.

It is not an unprimeable number, because it can be changed into a prime (18248761471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71284097 + ... + 71284352.

Almost surely, 2^18248761472 is an apocalyptic number.

It is an amenable number.

18248761472 is a deficient number, since it is larger than the sum of its proper divisors (18106193278).

18248761472 is an equidigital number, since it uses as much as digits as its factorization.

18248761472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142568463 (or 142568451 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 50.

The spelling of 18248761472 in words is "eighteen billion, two hundred forty-eight million, seven hundred sixty-one thousand, four hundred seventy-two".