19485686945 has 8 divisors (see below), whose sum is σ = 23712160320. Its totient is φ = 15368992240.

The previous prime is 19485686939. The next prime is 19485686953. The reversal of 19485686945 is 54968658491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19485686945 - 2⁴ = 19485686929 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 27444275 + ... + 27444984.

It is an arithmetic number, because the mean of its divisors is an integer number (2964020040).

Almost surely, 2^19485686945 is an apocalyptic number.

It is an amenable number.

19485686945 is a deficient number, since it is larger than the sum of its proper divisors (4226473375).

19485686945 is an equidigital number, since it uses as much as digits as its factorization.

19485686945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54889335.

The product of its digits is 74649600, while the sum is 65.

The spelling of 19485686945 in words is "nineteen billion, four hundred eighty-five million, six hundred eighty-six thousand, nine hundred forty-five".