1017250649 has 4 divisors (see below), whose sum is σ = 1017795636. Its totient is φ = 1016705664.

The previous prime is 1017250639. The next prime is 1017250667. The reversal of 1017250649 is 9460527101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 306495049 + 710755600 = 17507^2 + 26660^2 .

It is a cyclic number.

It is not a de Polignac number, because 1017250649 - 2⁸ = 1017250393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1017250639) 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 in 3 ways as a sum of consecutive naturals, for example, 269684 + ... + 273429.

It is an arithmetic number, because the mean of its divisors is an integer number (254448909).

Almost surely, 2^1017250649 is an apocalyptic number.

It is an amenable number.

1017250649 is a deficient number, since it is larger than the sum of its proper divisors (544987).

1017250649 is an equidigital number, since it uses as much as digits as its factorization.

1017250649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544986.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1017250649 is about 31894.3670418461. The cubic root of 1017250649 is about 1005.7174646314.

The spelling of 1017250649 in words is "one billion, seventeen million, two hundred fifty thousand, six hundred forty-nine".