2542196549 has 2 divisors, whose sum is σ = 2542196550. Its totient is φ = 2542196548.

The previous prime is 2542196441. The next prime is 2542196551. The reversal of 2542196549 is 9456912452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1988535649 + 553660900 = 44593^2 + 23530^2 .

It is a cyclic number.

It is not a de Polignac number, because 2542196549 - 2²⁸ = 2273761093 is a prime.

Together with 2542196551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2542196149) 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, 1271098274 + 1271098275.

It is an arithmetic number, because the mean of its divisors is an integer number (1271098275).

Almost surely, 2^2542196549 is an apocalyptic number.

It is an amenable number.

2542196549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2542196549 is an equidigital number, since it uses as much as digits as its factorization.

2542196549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 47.

The square root of 2542196549 is about 50420.1998111868. The cubic root of 2542196549 is about 1364.8021823743.

The spelling of 2542196549 in words is "two billion, five hundred forty-two million, one hundred ninety-six thousand, five hundred forty-nine".