18322871044 has 27 divisors (see below), whose sum is σ = 32707052287. Its totient is φ = 8981539424.

The previous prime is 18322871023. The next prime is 18322871053. The reversal of 18322871044 is 44017822381.

The square root of 18322871044 is 135362.

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

It can be written as a sum of positive squares in 4 ways, for example, as 2627792644 + 15695078400 = 51262^2 + 125280^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18322870988 and 18322871006.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14347734 + ... + 14349010.

Almost surely, 2^18322871044 is an apocalyptic number.

18322871044 is the 135362-nd square number.

It is an amenable number.

18322871044 is a deficient number, since it is larger than the sum of its proper divisors (14384181243).

18322871044 is an frugal number, since it uses more digits than its factorization.

18322871044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664 (or 1332 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The spelling of 18322871044 in words is "eighteen billion, three hundred twenty-two million, eight hundred seventy-one thousand, forty-four".