19468747845 has 32 divisors (see below), whose sum is σ = 35264160000. Its totient is φ = 10187416512.

The previous prime is 19468747789. The next prime is 19468747849. The reversal of 19468747845 is 54874786491.

19468747845 is a `hidden beast` number, since 1 + 9 + 46 + 87 + 478 + 45 = 666.

It is not a de Polignac number, because 19468747845 - 2²² = 19464553541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19468747849) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1353345 + ... + 1367654.

It is an arithmetic number, because the mean of its divisors is an integer number (1102005000).

Almost surely, 2^19468747845 is an apocalyptic number.

19468747845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19468747845 is a deficient number, since it is larger than the sum of its proper divisors (15795412155).

19468747845 is a wasteful number, since it uses less digits than its factorization.

19468747845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2721066 (or 2721060 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 63.

It can be divided in two parts, 19 and 468747845, that added together give a palindrome (468747864).

The spelling of 19468747845 in words is "nineteen billion, four hundred sixty-eight million, seven hundred forty-seven thousand, eight hundred forty-five".