2187628653 has 16 divisors (see below), whose sum is σ = 3334262400. Its totient is φ = 1249798656.

The previous prime is 2187628643. The next prime is 2187628661. The reversal of 2187628653 is 3568267812.

It is not a de Polignac number, because 2187628653 - 2⁴ = 2187628637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187628643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123073 + ... + 139721.

It is an arithmetic number, because the mean of its divisors is an integer number (208391400).

Almost surely, 2^2187628653 is an apocalyptic number.

It is an amenable number.

2187628653 is a deficient number, since it is larger than the sum of its proper divisors (1146633747).

2187628653 is a wasteful number, since it uses less digits than its factorization.

2187628653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22916.

The product of its digits is 967680, while the sum is 48.

The square root of 2187628653 is about 46772.0926728749. The cubic root of 2187628653 is about 1298.1489737236.

The spelling of 2187628653 in words is "two billion, one hundred eighty-seven million, six hundred twenty-eight thousand, six hundred fifty-three".