1110011989 has 2 divisors, whose sum is σ = 1110011990. Its totient is φ = 1110011988.

The previous prime is 1110011927. The next prime is 1110012011. The reversal of 1110011989 is 9891100111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 578017764 + 531994225 = 24042^2 + 23065^2 .

It is a cyclic number.

It is not a de Polignac number, because 1110011989 - 2⁹ = 1110011477 is a prime.

It is a super-2 number, since 2×1110011989² = 2464253231447472242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1110011989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1110011909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555005994 + 555005995.

It is an arithmetic number, because the mean of its divisors is an integer number (555005995).

Almost surely, 2^1110011989 is an apocalyptic number.

It is an amenable number.

1110011989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1110011989 is an equidigital number, since it uses as much as digits as its factorization.

1110011989 is an evil number, because the sum of its binary digits is even.

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

The square root of 1110011989 is about 33316.8424224145. The cubic root of 1110011989 is about 1035.4025331816.

The spelling of 1110011989 in words is "one billion, one hundred ten million, eleven thousand, nine hundred eighty-nine".