2549189089 has 2 divisors, whose sum is σ = 2549189090. Its totient is φ = 2549189088.

The previous prime is 2549189087. The next prime is 2549189113. The reversal of 2549189089 is 9809819452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1722914064 + 826275025 = 41508^2 + 28745^2 .

It is a cyclic number.

It is not a de Polignac number, because 2549189089 - 2¹ = 2549189087 is a prime.

It is a super-2 number, since 2×2549189089² = 12996730022953299842, which contains 22 as substring.

Together with 2549189087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2549189087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1274594544 + 1274594545.

It is an arithmetic number, because the mean of its divisors is an integer number (1274594545).

Almost surely, 2^2549189089 is an apocalyptic number.

It is an amenable number.

2549189089 is a deficient number, since it is larger than the sum of its proper divisors (1).

2549189089 is an equidigital number, since it uses as much as digits as its factorization.

2549189089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 55.

The square root of 2549189089 is about 50489.4948380354. The cubic root of 2549189089 is about 1366.0523738250.

The spelling of 2549189089 in words is "two billion, five hundred forty-nine million, one hundred eighty-nine thousand, eighty-nine".