1889222555 has 8 divisors (see below), whose sum is σ = 2473164144. Its totient is φ = 1373980000.

The previous prime is 1889222549. The next prime is 1889222561. The reversal of 1889222555 is 5552229881.

It is an interprime number because it is at equal distance from previous prime (1889222549) and next prime (1889222561).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1889222555 - 2⁸ = 1889222299 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17174696 + ... + 17174805.

It is an arithmetic number, because the mean of its divisors is an integer number (309145518).

Almost surely, 2^1889222555 is an apocalyptic number.

1889222555 is a deficient number, since it is larger than the sum of its proper divisors (583941589).

1889222555 is a wasteful number, since it uses less digits than its factorization.

1889222555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34349517.

The product of its digits is 576000, while the sum is 47.

The square root of 1889222555 is about 43465.1878518890. The cubic root of 1889222555 is about 1236.2160390389.

The spelling of 1889222555 in words is "one billion, eight hundred eighty-nine million, two hundred twenty-two thousand, five hundred fifty-five".