1086245309 has 2 divisors, whose sum is σ = 1086245310. Its totient is φ = 1086245308.

The previous prime is 1086245299. The next prime is 1086245353. The reversal of 1086245309 is 9035426801.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 845530084 + 240715225 = 29078^2 + 15515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1086245309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1086245359) 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, 543122654 + 543122655.

It is an arithmetic number, because the mean of its divisors is an integer number (543122655).

Almost surely, 2^1086245309 is an apocalyptic number.

It is an amenable number.

1086245309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1086245309 is an equidigital number, since it uses as much as digits as its factorization.

1086245309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 1086245309 is about 32958.2358296071. The cubic root of 1086245309 is about 1027.9594215159.

The spelling of 1086245309 in words is "one billion, eighty-six million, two hundred forty-five thousand, three hundred nine".