1928545855 has 4 divisors (see below), whose sum is σ = 2314255032. Its totient is φ = 1542836680.

The previous prime is 1928545799. The next prime is 1928545859. The reversal of 1928545855 is 5585458291.

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

It is not a de Polignac number, because 1928545855 - 2¹⁵ = 1928513087 is a prime.

It is a super-2 number, since 2×1928545855² = 7438578229675362050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1928545859) by changing a digit.

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, 192854581 + ... + 192854590.

It is an arithmetic number, because the mean of its divisors is an integer number (578563758).

Almost surely, 2^1928545855 is an apocalyptic number.

1928545855 is a deficient number, since it is larger than the sum of its proper divisors (385709177).

1928545855 is an equidigital number, since it uses as much as digits as its factorization.

1928545855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385709176.

The product of its digits is 2880000, while the sum is 52.

The square root of 1928545855 is about 43915.2121137995. The cubic root of 1928545855 is about 1244.7342981215.

The spelling of 1928545855 in words is "one billion, nine hundred twenty-eight million, five hundred forty-five thousand, eight hundred fifty-five".