18074510656 has 28 divisors (see below), whose sum is σ = 36835979668. Its totient is φ = 8793004032.

The previous prime is 18074510611. The next prime is 18074510677. The reversal of 18074510656 is 65601547081.

It can be written as a sum of positive squares in 2 ways, for example, as 17234438400 + 840072256 = 131280^2 + 28984^2 .

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 3814041 + ... + 3818776.

Almost surely, 2^18074510656 is an apocalyptic number.

18074510656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18074510656 is an abundant number, since it is smaller than the sum of its proper divisors (18761469012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18074510656 is an equidigital number, since it uses as much as digits as its factorization.

18074510656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7632866 (or 7632856 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 18074510656 in words is "eighteen billion, seventy-four million, five hundred ten thousand, six hundred fifty-six".