1928545421255 has 4 divisors (see below), whose sum is σ = 2314254505512. Its totient is φ = 1542836337000.

The previous prime is 1928545421239. The next prime is 1928545421269. The reversal of 1928545421255 is 5521245458291.

It is a happy number.

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

It is not a de Polignac number, because 1928545421255 - 2⁴ = 1928545421239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1928545421197 and 1928545421206.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 192854542121 + ... + 192854542130.

It is an arithmetic number, because the mean of its divisors is an integer number (578563626378).

Almost surely, 2^{1928545421255} is an apocalyptic number.

1928545421255 is a deficient number, since it is larger than the sum of its proper divisors (385709084257).

1928545421255 is an equidigital number, since it uses as much as digits as its factorization.

1928545421255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385709084256.

The product of its digits is 5760000, while the sum is 53.

The spelling of 1928545421255 in words is "one trillion, nine hundred twenty-eight billion, five hundred forty-five million, four hundred twenty-one thousand, two hundred fifty-five".