1889671289 has 8 divisors (see below), whose sum is σ = 2117175168. Its totient is φ = 1671453360.

The previous prime is 1889671271. The next prime is 1889671307. The reversal of 1889671289 is 9821769881.

It is an interprime number because it is at equal distance from previous prime (1889671271) and next prime (1889671307).

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

It is a cyclic number.

It is not a de Polignac number, because 1889671289 - 2¹² = 1889667193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1889671219) 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 7 ways as a sum of consecutive naturals, for example, 2321057 + ... + 2321870.

It is an arithmetic number, because the mean of its divisors is an integer number (264646896).

Almost surely, 2^1889671289 is an apocalyptic number.

It is an amenable number.

1889671289 is a deficient number, since it is larger than the sum of its proper divisors (227503879).

1889671289 is a wasteful number, since it uses less digits than its factorization.

1889671289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4642975.

The product of its digits is 3483648, while the sum is 59.

The square root of 1889671289 is about 43470.3495385073. The cubic root of 1889671289 is about 1236.3139079131.

The spelling of 1889671289 in words is "one billion, eight hundred eighty-nine million, six hundred seventy-one thousand, two hundred eighty-nine".