19845831484 has 12 divisors (see below), whose sum is σ = 36773158464. Its totient is φ = 9339214784.

The previous prime is 19845831469. The next prime is 19845831539. The reversal of 19845831484 is 48413854891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145925164 + ... + 145925299.

It is an arithmetic number, because the mean of its divisors is an integer number (3064429872).

Almost surely, 2^19845831484 is an apocalyptic number.

It is an amenable number.

19845831484 is a deficient number, since it is larger than the sum of its proper divisors (16927326980).

19845831484 is a wasteful number, since it uses less digits than its factorization.

19845831484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291850484 (or 291850482 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 55.

The spelling of 19845831484 in words is "nineteen billion, eight hundred forty-five million, eight hundred thirty-one thousand, four hundred eighty-four".