19053667872 has 36 divisors (see below), whose sum is σ = 54183868830. Its totient is φ = 6351222528.

The previous prime is 19053667811. The next prime is 19053667873. The reversal of 19053667872 is 27876635091.

It can be written as a sum of positive squares in only one way, i.e., 10916906256 + 8136761616 = 104484^2 + 90204^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (19053667873) 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 5 ways as a sum of consecutive naturals, for example, 33078997 + ... + 33079572.

Almost surely, 2^19053667872 is an apocalyptic number.

19053667872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19053667872 is an abundant number, since it is smaller than the sum of its proper divisors (35130200958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19053667872 is a wasteful number, since it uses less digits than its factorization.

19053667872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66158585 (or 66158574 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 19053667872 in words is "nineteen billion, fifty-three million, six hundred sixty-seven thousand, eight hundred seventy-two".