19845655324 has 48 divisors (see below), whose sum is σ = 38859803136. Its totient is φ = 8790163200.

The previous prime is 19845655303. The next prime is 19845655339. The reversal of 19845655324 is 42355654891.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 803284 + ... + 827620.

It is an arithmetic number, because the mean of its divisors is an integer number (809579232).

Almost surely, 2^19845655324 is an apocalyptic number.

It is an amenable number.

19845655324 is a deficient number, since it is larger than the sum of its proper divisors (19014147812).

19845655324 is a wasteful number, since it uses less digits than its factorization.

19845655324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24826 (or 24824 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 52.

The spelling of 19845655324 in words is "nineteen billion, eight hundred forty-five million, six hundred fifty-five thousand, three hundred twenty-four".