1071144909 has 12 divisors (see below), whose sum is σ = 1551254016. Its totient is φ = 712229832.

The previous prime is 1071144889. The next prime is 1071144911. The reversal of 1071144909 is 9094411701.

It is not a de Polignac number, because 1071144909 - 2⁹ = 1071144397 is a prime.

It is a super-2 number, since 2×1071144909² = 2294702832153236562, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071144929) 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, 151927 + ... + 158820.

It is an arithmetic number, because the mean of its divisors is an integer number (129271168).

Almost surely, 2^1071144909 is an apocalyptic number.

It is an amenable number.

1071144909 is a deficient number, since it is larger than the sum of its proper divisors (480109107).

1071144909 is a wasteful number, since it uses less digits than its factorization.

1071144909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311136 (or 311133 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 1071144909 is about 32728.3502333986. The cubic root of 1071144909 is about 1023.1737965200.

The spelling of 1071144909 in words is "one billion, seventy-one million, one hundred forty-four thousand, nine hundred nine".