28110841919 has 4 divisors (see below), whose sum is σ = 28111237320. Its totient is φ = 28110446520.

The previous prime is 28110841907. The next prime is 28110841999. The reversal of 28110841919 is 91914801182.

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

It is a cyclic number.

It is not a de Polignac number, because 28110841919 - 2⁴ = 28110841903 is a prime.

It is a super-2 number, since 2×28110841919² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28110841919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28110841999) 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, 58289 + ... + 244170.

It is an arithmetic number, because the mean of its divisors is an integer number (7027809330).

Almost surely, 2^28110841919 is an apocalyptic number.

28110841919 is a deficient number, since it is larger than the sum of its proper divisors (395401).

28110841919 is an equidigital number, since it uses as much as digits as its factorization.

28110841919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395400.

The product of its (nonzero) digits is 41472, while the sum is 44.

The spelling of 28110841919 in words is "twenty-eight billion, one hundred ten million, eight hundred forty-one thousand, nine hundred nineteen".