17946463945 has 16 divisors (see below), whose sum is σ = 22094622720. Its totient is φ = 13988902144.

The previous prime is 17946463939. The next prime is 17946463963. The reversal of 17946463945 is 54936464971.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17946463945 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17946463945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235849 + ... + 302518.

It is an arithmetic number, because the mean of its divisors is an integer number (1380913920).

Almost surely, 2^17946463945 is an apocalyptic number.

It is an amenable number.

17946463945 is a deficient number, since it is larger than the sum of its proper divisors (4148158775).

17946463945 is a wasteful number, since it uses less digits than its factorization.

17946463945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538544.

The product of its digits is 19595520, while the sum is 58.

The spelling of 17946463945 in words is "seventeen billion, nine hundred forty-six million, four hundred sixty-three thousand, nine hundred forty-five".