1111010989 has 16 divisors (see below), whose sum is σ = 1251895680. Its totient is φ = 985327200.

The previous prime is 1111010977. The next prime is 1111010993. The reversal of 1111010989 is 9890101111.

It is not a de Polignac number, because 1111010989 - 2²¹ = 1108913837 is a prime.

It is a Duffinian number.

1111010989 is a modest number, since divided by 10989 gives 1111 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1111010989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111010189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44392 + ... + 64750.

It is an arithmetic number, because the mean of its divisors is an integer number (78243480).

Almost surely, 2^1111010989 is an apocalyptic number.

It is an amenable number.

1111010989 is a deficient number, since it is larger than the sum of its proper divisors (140884691).

1111010989 is an equidigital number, since it uses as much as digits as its factorization.

1111010989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20433 (or 20411 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 31.

The square root of 1111010989 is about 33331.8314678327. The cubic root of 1111010989 is about 1035.7130574490.

The spelling of 1111010989 in words is "one billion, one hundred eleven million, ten thousand, nine hundred eighty-nine".