2189936555 has 4 divisors (see below), whose sum is σ = 2627923872. Its totient is φ = 1751949240.

The previous prime is 2189936543. The next prime is 2189936591. The reversal of 2189936555 is 5556399812.

2189936555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2189936555 - 2²⁶ = 2122827691 is a prime.

It is a super-2 number, since 2×2189936555² = 9591644229850536050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2189936497 and 2189936506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218993651 + ... + 218993660.

It is an arithmetic number, because the mean of its divisors is an integer number (656980968).

Almost surely, 2^2189936555 is an apocalyptic number.

2189936555 is a deficient number, since it is larger than the sum of its proper divisors (437987317).

2189936555 is an equidigital number, since it uses as much as digits as its factorization.

2189936555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437987316.

The product of its digits is 2916000, while the sum is 53.

The square root of 2189936555 is about 46796.7579539438. The cubic root of 2189936555 is about 1298.6053198610.

The spelling of 2189936555 in words is "two billion, one hundred eighty-nine million, nine hundred thirty-six thousand, five hundred fifty-five".