2188685355 has 16 divisors (see below), whose sum is σ = 3525091584. Its totient is φ = 1159567200.

The previous prime is 2188685351. The next prime is 2188685363. The reversal of 2188685355 is 5535868812.

It is not a de Polignac number, because 2188685355 - 2² = 2188685351 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2188685298 and 2188685307.

It is not an unprimeable number, because it can be changed into a prime (2188685351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480889 + ... + 485418.

It is an arithmetic number, because the mean of its divisors is an integer number (220318224).

Almost surely, 2^2188685355 is an apocalyptic number.

2188685355 is a deficient number, since it is larger than the sum of its proper divisors (1336406229).

2188685355 is a wasteful number, since it uses less digits than its factorization.

2188685355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966466.

The product of its digits is 2304000, while the sum is 51.

The square root of 2188685355 is about 46783.3875964535. The cubic root of 2188685355 is about 1298.3579573652.

The spelling of 2188685355 in words is "two billion, one hundred eighty-eight million, six hundred eighty-five thousand, three hundred fifty-five".