19003952728 has 16 divisors (see below), whose sum is σ = 36595450080. Its totient is φ = 9245166048.

The previous prime is 19003952713. The next prime is 19003952731. The reversal of 19003952728 is 82725930091.

It is a super-2 number, since 2×19003952728² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 32100976 + ... + 32101567.

It is an arithmetic number, because the mean of its divisors is an integer number (2287215630).

Almost surely, 2^19003952728 is an apocalyptic number.

It is an amenable number.

19003952728 is a deficient number, since it is larger than the sum of its proper divisors (17591497352).

19003952728 is a wasteful number, since it uses less digits than its factorization.

19003952728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64202586 (or 64202582 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 19003952728 in words is "nineteen billion, three million, nine hundred fifty-two thousand, seven hundred twenty-eight".