2827431989 has 2 divisors, whose sum is σ = 2827431990. Its totient is φ = 2827431988.

The previous prime is 2827431983. The next prime is 2827432039. The reversal of 2827431989 is 9891347282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1966479025 + 860952964 = 44345^2 + 29342^2 .

It is a cyclic number.

It is not a de Polignac number, because 2827431989 - 2¹² = 2827427893 is a prime.

It is a super-2 number, since 2×2827431989² = 15988743304840992242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2827431989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2827431983) 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, 1413715994 + 1413715995.

It is an arithmetic number, because the mean of its divisors is an integer number (1413715995).

Almost surely, 2^2827431989 is an apocalyptic number.

It is an amenable number.

2827431989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2827431989 is an equidigital number, since it uses as much as digits as its factorization.

2827431989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 53.

The square root of 2827431989 is about 53173.6023699730. The cubic root of 2827431989 is about 1414.0476869604.

The spelling of 2827431989 in words is "two billion, eight hundred twenty-seven million, four hundred thirty-one thousand, nine hundred eighty-nine".