2189555653 has 8 divisors (see below), whose sum is σ = 2198923200. Its totient is φ = 2180199840.

The previous prime is 2189555617. The next prime is 2189555701. The reversal of 2189555653 is 3565559812.

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 2189555653 - 2²¹ = 2187458501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2189555597 and 2189555606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189585653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 756976 + ... + 759862.

It is an arithmetic number, because the mean of its divisors is an integer number (274865400).

Almost surely, 2^2189555653 is an apocalyptic number.

It is an amenable number.

2189555653 is a deficient number, since it is larger than the sum of its proper divisors (9367547).

2189555653 is a wasteful number, since it uses less digits than its factorization.

2189555653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5867.

The product of its digits is 1620000, while the sum is 49.

The square root of 2189555653 is about 46792.6880292210. The cubic root of 2189555653 is about 1298.5300254355.

The spelling of 2189555653 in words is "two billion, one hundred eighty-nine million, five hundred fifty-five thousand, six hundred fifty-three".