1061990289 has 12 divisors (see below), whose sum is σ = 1624220676. Its totient is φ = 666346752.

The previous prime is 1061990273. The next prime is 1061990311. The reversal of 1061990289 is 9820991601.

1061990289 is a `hidden beast` number, since 1 + 0 + 619 + 9 + 0 + 28 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 975500289 + 86490000 = 31233^2 + 9300^2 .

It is not a de Polignac number, because 1061990289 - 2⁴ = 1061990273 is a prime.

It is a super-2 number, since 2×1061990289² = 2255646747860607042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1061990989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3470404 + ... + 3470709.

It is an arithmetic number, because the mean of its divisors is an integer number (135351723).

Almost surely, 2^1061990289 is an apocalyptic number.

It is an amenable number.

1061990289 is a deficient number, since it is larger than the sum of its proper divisors (562230387).

1061990289 is a wasteful number, since it uses less digits than its factorization.

1061990289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6941136 (or 6941133 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The square root of 1061990289 is about 32588.1924782581. The cubic root of 1061990289 is about 1020.2505756928.

The spelling of 1061990289 in words is "one billion, sixty-one million, nine hundred ninety thousand, two hundred eighty-nine".