18345733748 has 12 divisors (see below), whose sum is σ = 32129950020. Its totient is φ = 9165748032.

The previous prime is 18345733711. The next prime is 18345733781. The reversal of 18345733748 is 84733754381.

It can be written as a sum of positive squares in 2 ways, for example, as 14211500944 + 4134232804 = 119212^2 + 64298^2 .

It is a super-2 number, since 2×18345733748² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18345733748.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1773911 + ... + 1784222.

It is an arithmetic number, because the mean of its divisors is an integer number (2677495835).

Almost surely, 2^18345733748 is an apocalyptic number.

It is an amenable number.

18345733748 is a deficient number, since it is larger than the sum of its proper divisors (13784216272).

18345733748 is a wasteful number, since it uses less digits than its factorization.

18345733748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3559426 (or 3559424 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 53.

The spelling of 18345733748 in words is "eighteen billion, three hundred forty-five million, seven hundred thirty-three thousand, seven hundred forty-eight".