19290543928 has 8 divisors (see below), whose sum is σ = 36169769880. Its totient is φ = 9645271960.

The previous prime is 19290543919. The next prime is 19290543973. The reversal of 19290543928 is 82934509291.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1205658988 + ... + 1205659003.

It is an arithmetic number, because the mean of its divisors is an integer number (4521221235).

Almost surely, 2^19290543928 is an apocalyptic number.

It is an amenable number.

19290543928 is a deficient number, since it is larger than the sum of its proper divisors (16879225952).

19290543928 is a wasteful number, since it uses less digits than its factorization.

19290543928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2411317997 (or 2411317993 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 52.

The spelling of 19290543928 in words is "nineteen billion, two hundred ninety million, five hundred forty-three thousand, nine hundred twenty-eight".