1045027989 has 12 divisors (see below), whose sum is σ = 1516079500. Its totient is φ = 693641664.

The previous prime is 1045027981. The next prime is 1045027999. The reversal of 1045027989 is 9897205401.

It can be written as a sum of positive squares in 2 ways, for example, as 392634225 + 652393764 = 19815^2 + 25542^2 .

It is not a de Polignac number, because 1045027989 - 2³ = 1045027981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045027981) 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 11 ways as a sum of consecutive naturals, for example, 251464 + ... + 255585.

Almost surely, 2^1045027989 is an apocalyptic number.

It is an amenable number.

1045027989 is a deficient number, since it is larger than the sum of its proper divisors (471051511).

1045027989 is a wasteful number, since it uses less digits than its factorization.

1045027989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507284 (or 507281 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 1045027989 is about 32326.8926592087. The cubic root of 1045027989 is about 1014.7895214191.

The spelling of 1045027989 in words is "one billion, forty-five million, twenty-seven thousand, nine hundred eighty-nine".