1928103563 has 4 divisors (see below), whose sum is σ = 1928566728. Its totient is φ = 1927640400.

The previous prime is 1928103557. The next prime is 1928103587. The reversal of 1928103563 is 3653018291.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1928103563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1928103503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225281 + ... + 233682.

It is an arithmetic number, because the mean of its divisors is an integer number (482141682).

Almost surely, 2^1928103563 is an apocalyptic number.

1928103563 is a deficient number, since it is larger than the sum of its proper divisors (463165).

1928103563 is an equidigital number, since it uses as much as digits as its factorization.

1928103563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463164.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 1928103563 is about 43910.1760757117. The cubic root of 1928103563 is about 1244.6391352102.

The spelling of 1928103563 in words is "one billion, nine hundred twenty-eight million, one hundred three thousand, five hundred sixty-three".