19164722073 has 48 divisors (see below), whose sum is σ = 30845270016. Its totient is φ = 10545685920.

The previous prime is 19164722063. The next prime is 19164722099. The reversal of 19164722073 is 37022746191.

It is not a de Polignac number, because 19164722073 - 2¹² = 19164717977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19164722063) 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 47 ways as a sum of consecutive naturals, for example, 427440 + ... + 470142.

It is an arithmetic number, because the mean of its divisors is an integer number (642609792).

Almost surely, 2^19164722073 is an apocalyptic number.

It is an amenable number.

19164722073 is a deficient number, since it is larger than the sum of its proper divisors (11680547943).

19164722073 is a wasteful number, since it uses less digits than its factorization.

19164722073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42834 (or 42827 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The spelling of 19164722073 in words is "nineteen billion, one hundred sixty-four million, seven hundred twenty-two thousand, seventy-three".