1120909381 has 2 divisors, whose sum is σ = 1120909382. Its totient is φ = 1120909380.

The previous prime is 1120909369. The next prime is 1120909403. The reversal of 1120909381 is 1839090211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1009078756 + 111830625 = 31766^2 + 10575^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120909381 - 2⁹ = 1120908869 is a prime.

It is a super-2 number, since 2×1120909381² = 2512875680827606322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1120909481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560454690 + 560454691.

It is an arithmetic number, because the mean of its divisors is an integer number (560454691).

Almost surely, 2^1120909381 is an apocalyptic number.

It is an amenable number.

1120909381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120909381 is an equidigital number, since it uses as much as digits as its factorization.

1120909381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 1120909381 is about 33479.9847819559. The cubic root of 1120909381 is about 1038.7798131120.

Adding to 1120909381 its reverse (1839090211), we get a palindrome (2959999592).

The spelling of 1120909381 in words is "one billion, one hundred twenty million, nine hundred nine thousand, three hundred eighty-one".