19015997804 has 24 divisors (see below), whose sum is σ = 34357158528. Its totient is φ = 9199768320.

The previous prime is 19015997797. The next prime is 19015997813. The reversal of 19015997804 is 40879951091.

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 7 ways as a sum of consecutive naturals, for example, 1228964 + ... + 1244340.

It is an arithmetic number, because the mean of its divisors is an integer number (1431548272).

Almost surely, 2^19015997804 is an apocalyptic number.

It is an amenable number.

19015997804 is a deficient number, since it is larger than the sum of its proper divisors (15341160724).

19015997804 is a wasteful number, since it uses less digits than its factorization.

19015997804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25385 (or 25383 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 53.

The spelling of 19015997804 in words is "nineteen billion, fifteen million, nine hundred ninety-seven thousand, eight hundred four".