19842054608 has 20 divisors (see below), whose sum is σ = 38840313540. Its totient is φ = 9818747904.

The previous prime is 19842054601. The next prime is 19842054647. The reversal of 19842054608 is 80645024891.

It can be written as a sum of positive squares in 2 ways, for example, as 14633257024 + 5208797584 = 120968^2 + 72172^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19842054601) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6390863 + ... + 6393966.

It is an arithmetic number, because the mean of its divisors is an integer number (1942015677).

Almost surely, 2^19842054608 is an apocalyptic number.

It is an amenable number.

19842054608 is a deficient number, since it is larger than the sum of its proper divisors (18998258932).

19842054608 is a wasteful number, since it uses less digits than its factorization.

19842054608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12784934 (or 12784928 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 19842054608 in words is "nineteen billion, eight hundred forty-two million, fifty-four thousand, six hundred eight".