1019009249 has 2 divisors, whose sum is σ = 1019009250. Its totient is φ = 1019009248.

The previous prime is 1019009239. The next prime is 1019009261. The reversal of 1019009249 is 9429009101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 711182224 + 307827025 = 26668^2 + 17545^2 .

It is a cyclic number.

It is not a de Polignac number, because 1019009249 - 2¹² = 1019005153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1019009219) 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, 509504624 + 509504625.

It is an arithmetic number, because the mean of its divisors is an integer number (509504625).

Almost surely, 2^1019009249 is an apocalyptic number.

It is an amenable number.

1019009249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1019009249 is an equidigital number, since it uses as much as digits as its factorization.

1019009249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 1019009249 is about 31921.9242684397. The cubic root of 1019009249 is about 1006.2966848754.

The spelling of 1019009249 in words is "one billion, nineteen million, nine thousand, two hundred forty-nine".