1113120989 has 2 divisors, whose sum is σ = 1113120990. Its totient is φ = 1113120988.

The previous prime is 1113120977. The next prime is 1113120991. The reversal of 1113120989 is 9890213111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1080436900 + 32684089 = 32870^2 + 5717^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113120989 - 2⁴ = 1113120973 is a prime.

Together with 1113120991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113120959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556560494 + 556560495.

It is an arithmetic number, because the mean of its divisors is an integer number (556560495).

Almost surely, 2^1113120989 is an apocalyptic number.

It is an amenable number.

1113120989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113120989 is an equidigital number, since it uses as much as digits as its factorization.

1113120989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 35.

The square root of 1113120989 is about 33363.4678803029. The cubic root of 1113120989 is about 1036.3683082600.

The spelling of 1113120989 in words is "one billion, one hundred thirteen million, one hundred twenty thousand, nine hundred eighty-nine".