2189287645 has 8 divisors (see below), whose sum is σ = 2666356704. Its totient is φ = 1725289104.

The previous prime is 2189287613. The next prime is 2189287657. The reversal of 2189287645 is 5467829812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2189287645 - 2⁵ = 2189287613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2189287592 and 2189287601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3267259 + ... + 3267928.

It is an arithmetic number, because the mean of its divisors is an integer number (333294588).

Almost surely, 2^2189287645 is an apocalyptic number.

It is an amenable number.

2189287645 is a deficient number, since it is larger than the sum of its proper divisors (477069059).

2189287645 is an equidigital number, since it uses as much as digits as its factorization.

2189287645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6535259.

The product of its digits is 1935360, while the sum is 52.

The square root of 2189287645 is about 46789.8241608151. The cubic root of 2189287645 is about 1298.4770419858.

The spelling of 2189287645 in words is "two billion, one hundred eighty-nine million, two hundred eighty-seven thousand, six hundred forty-five".