2188347085 has 4 divisors (see below), whose sum is σ = 2626016508. Its totient is φ = 1750677664.

The previous prime is 2188347067. The next prime is 2188347089. The reversal of 2188347085 is 5807438812.

2188347085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1009523529 + 1178823556 = 31773^2 + 34334^2 .

It is a cyclic number.

It is not a de Polignac number, because 2188347085 - 2⁵ = 2188347053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188347089) 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, 218834704 + ... + 218834713.

It is an arithmetic number, because the mean of its divisors is an integer number (656504127).

Almost surely, 2^2188347085 is an apocalyptic number.

It is an amenable number.

2188347085 is a deficient number, since it is larger than the sum of its proper divisors (437669423).

2188347085 is an equidigital number, since it uses as much as digits as its factorization.

2188347085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437669422.

The product of its (nonzero) digits is 430080, while the sum is 46.

The square root of 2188347085 is about 46779.7721777266. The cubic root of 2188347085 is about 1298.2910651288.

The spelling of 2188347085 in words is "two billion, one hundred eighty-eight million, three hundred forty-seven thousand, eighty-five".