1001345249 has 2 divisors, whose sum is σ = 1001345250. Its totient is φ = 1001345248.

The previous prime is 1001345243. The next prime is 1001345299. The reversal of 1001345249 is 9425431001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 763969600 + 237375649 = 27640^2 + 15407^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001345249 - 2¹² = 1001341153 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1001345243) 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, 500672624 + 500672625.

It is an arithmetic number, because the mean of its divisors is an integer number (500672625).

Almost surely, 2^1001345249 is an apocalyptic number.

It is an amenable number.

1001345249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001345249 is an equidigital number, since it uses as much as digits as its factorization.

1001345249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1001345249 is about 31644.0397073446. The cubic root of 1001345249 is about 1000.4482154063.

The spelling of 1001345249 in words is "one billion, one million, three hundred forty-five thousand, two hundred forty-nine".