2189365 has 8 divisors (see below), whose sum is σ = 2644920. Its totient is φ = 1739712.

The previous prime is 2189357. The next prime is 2189371. The reversal of 2189365 is 5639812.

It can be written as a sum of positive squares in 4 ways, for example, as 167281 + 2022084 = 409^2 + 1422^2 .

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 2189365 - 2³ = 2189357 is a prime.

It is an Ulam number.

2189365 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2189365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610 + ... + 2179.

It is an arithmetic number, because the mean of its divisors is an integer number (330615).

2^2189365 is an apocalyptic number.

It is an amenable number.

2189365 is a deficient number, since it is larger than the sum of its proper divisors (455555).

2189365 is a wasteful number, since it uses less digits than its factorization.

2189365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2951.

The product of its digits is 12960, while the sum is 34.

The square root of 2189365 is about 1479.6502965228. The cubic root of 2189365 is about 129.8492335013.

The spelling of 2189365 in words is "two million, one hundred eighty-nine thousand, three hundred sixty-five".