2189418555 has 32 divisors (see below), whose sum is σ = 3665664000. Its totient is φ = 1114525440.

The previous prime is 2189418547. The next prime is 2189418557. The reversal of 2189418555 is 5558149812.

It is not a de Polignac number, because 2189418555 - 2³ = 2189418547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2189418557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1696 + ... + 66194.

It is an arithmetic number, because the mean of its divisors is an integer number (114552000).

Almost surely, 2^2189418555 is an apocalyptic number.

2189418555 is a deficient number, since it is larger than the sum of its proper divisors (1476245445).

2189418555 is a wasteful number, since it uses less digits than its factorization.

2189418555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64611.

The product of its digits is 576000, while the sum is 48.

The square root of 2189418555 is about 46791.2230551842. The cubic root of 2189418555 is about 1298.5029225870.

The spelling of 2189418555 in words is "two billion, one hundred eighty-nine million, four hundred eighteen thousand, five hundred fifty-five".