19204039853 has 4 divisors (see below), whose sum is σ = 19222347900. Its totient is φ = 19185731808.

The previous prime is 19204039849. The next prime is 19204039873. The reversal of 19204039853 is 35893040291.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18189107689 + 1014932164 = 134867^2 + 31858^2 .

It is a cyclic number.

It is not a de Polignac number, because 19204039853 - 2² = 19204039849 is a prime.

It is a super-2 number, since 2×19204039853² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19204039823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9152450 + ... + 9154547.

It is an arithmetic number, because the mean of its divisors is an integer number (4805586975).

Almost surely, 2^19204039853 is an apocalyptic number.

It is an amenable number.

19204039853 is a deficient number, since it is larger than the sum of its proper divisors (18308047).

19204039853 is a wasteful number, since it uses less digits than its factorization.

19204039853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18308046.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 19204039853 in words is "nineteen billion, two hundred four million, thirty-nine thousand, eight hundred fifty-three".