1989027175 has 12 divisors (see below), whose sum is σ = 2508198840. Its totient is φ = 1564250720.

The previous prime is 1989027163. The next prime is 1989027199. The reversal of 1989027175 is 5717209891.

It is a de Polignac number, because none of the positive numbers 2^k-1989027175 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 672772 + ... + 675721.

It is an arithmetic number, because the mean of its divisors is an integer number (209016570).

Almost surely, 2^1989027175 is an apocalyptic number.

1989027175 is a deficient number, since it is larger than the sum of its proper divisors (519171665).

1989027175 is a wasteful number, since it uses less digits than its factorization.

1989027175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348562 (or 1348557 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 49.

The square root of 1989027175 is about 44598.5109056345. The cubic root of 1989027175 is about 1257.6126743011.

The spelling of 1989027175 in words is "one billion, nine hundred eighty-nine million, twenty-seven thousand, one hundred seventy-five".