1086542549 has 2 divisors, whose sum is σ = 1086542550. Its totient is φ = 1086542548.

The previous prime is 1086542519. The next prime is 1086542603. The reversal of 1086542549 is 9452456801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 986902225 + 99640324 = 31415^2 + 9982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1086542549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1086542519) 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, 543271274 + 543271275.

It is an arithmetic number, because the mean of its divisors is an integer number (543271275).

Almost surely, 2^1086542549 is an apocalyptic number.

It is an amenable number.

1086542549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1086542549 is an equidigital number, since it uses as much as digits as its factorization.

1086542549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 1086542549 is about 32962.7448644678. The cubic root of 1086542549 is about 1028.0531765177.

The spelling of 1086542549 in words is "one billion, eighty-six million, five hundred forty-two thousand, five hundred forty-nine".