1098015509 has 2 divisors, whose sum is σ = 1098015510. Its totient is φ = 1098015508.

The previous prime is 1098015467. The next prime is 1098015553. The reversal of 1098015509 is 9055108901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1097596900 + 418609 = 33130^2 + 647^2 .

It is a cyclic number.

It is not a de Polignac number, because 1098015509 - 2¹⁶ = 1097949973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1098015559) 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, 549007754 + 549007755.

It is an arithmetic number, because the mean of its divisors is an integer number (549007755).

Almost surely, 2^1098015509 is an apocalyptic number.

It is an amenable number.

1098015509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098015509 is an equidigital number, since it uses as much as digits as its factorization.

1098015509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 38.

The square root of 1098015509 is about 33136.3170705496. The cubic root of 1098015509 is about 1031.6589688645.

The spelling of 1098015509 in words is "one billion, ninety-eight million, fifteen thousand, five hundred nine".