5511489989 has 2 divisors, whose sum is σ = 5511489990. Its totient is φ = 5511489988.

The previous prime is 5511489983. The next prime is 5511490003. The reversal of 5511489989 is 9899841155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3390150625 + 2121339364 = 58225^2 + 46058^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5511489989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5511489983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2755744994 + 2755744995.

It is an arithmetic number, because the mean of its divisors is an integer number (2755744995).

Almost surely, 2^5511489989 is an apocalyptic number.

It is an amenable number.

5511489989 is a deficient number, since it is larger than the sum of its proper divisors (1).

5511489989 is an equidigital number, since it uses as much as digits as its factorization.

5511489989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4665600, while the sum is 59.

The square root of 5511489989 is about 74239.4099451228. The cubic root of 5511489989 is about 1766.4025146098.

The spelling of 5511489989 in words is "five billion, five hundred eleven million, four hundred eighty-nine thousand, nine hundred eighty-nine".