5811146989 has 2 divisors, whose sum is σ = 5811146990. Its totient is φ = 5811146988.

The previous prime is 5811146987. The next prime is 5811147103. The reversal of 5811146989 is 9896411185.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5139456100 + 671690889 = 71690^2 + 25917^2 .

It is a cyclic number.

It is not a de Polignac number, because 5811146989 - 2¹ = 5811146987 is a prime.

It is a super-2 number, since 2×5811146989² = 67538858655527532242, which contains 22 as substring.

Together with 5811146987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5811146987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2905573494 + 2905573495.

It is an arithmetic number, because the mean of its divisors is an integer number (2905573495).

Almost surely, 2^5811146989 is an apocalyptic number.

It is an amenable number.

5811146989 is a deficient number, since it is larger than the sum of its proper divisors (1).

5811146989 is an equidigital number, since it uses as much as digits as its factorization.

5811146989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 52.

The square root of 5811146989 is about 76230.8794977468. The cubic root of 5811146989 is about 1797.8520663959.

The spelling of 5811146989 in words is "five billion, eight hundred eleven million, one hundred forty-six thousand, nine hundred eighty-nine".