18298197448 has 8 divisors (see below), whose sum is σ = 34309120230. Its totient is φ = 9149098720.

The previous prime is 18298197397. The next prime is 18298197457. The reversal of 18298197448 is 84479189281.

It can be written as a sum of positive squares in only one way, i.e., 13641772804 + 4656424644 = 116798^2 + 68238^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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, 1143637333 + ... + 1143637348.

Almost surely, 2^18298197448 is an apocalyptic number.

It is an amenable number.

18298197448 is a deficient number, since it is larger than the sum of its proper divisors (16010922782).

18298197448 is a wasteful number, since it uses less digits than its factorization.

18298197448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287274687 (or 2287274683 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 61.

The spelling of 18298197448 in words is "eighteen billion, two hundred ninety-eight million, one hundred ninety-seven thousand, four hundred forty-eight".