2288109645 has 24 divisors (see below), whose sum is σ = 4199355576. Its totient is φ = 1148540928.

The previous prime is 2288109643. The next prime is 2288109647. The reversal of 2288109645 is 5469018822.

It is an interprime number because it is at equal distance from previous prime (2288109643) and next prime (2288109647).

It can be written as a sum of positive squares in 4 ways, for example, as 1197921321 + 1090188324 = 34611^2 + 33018^2 .

It is not a de Polignac number, because 2288109645 - 2¹ = 2288109643 is a prime.

It is a super-3 number, since 3×2288109645³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2288109645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2288109643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1494732 + ... + 1496261.

It is an arithmetic number, because the mean of its divisors is an integer number (174973149).

Almost surely, 2^2288109645 is an apocalyptic number.

It is an amenable number.

2288109645 is a deficient number, since it is larger than the sum of its proper divisors (1911245931).

2288109645 is a wasteful number, since it uses less digits than its factorization.

2288109645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991021 (or 2991018 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 2288109645 is about 47834.1890806147. The cubic root of 2288109645 is about 1317.7275035094.

The spelling of 2288109645 in words is "two billion, two hundred eighty-eight million, one hundred nine thousand, six hundred forty-five".