1115215489 has 2 divisors, whose sum is σ = 1115215490. Its totient is φ = 1115215488.

The previous prime is 1115215477. The next prime is 1115215501. The reversal of 1115215489 is 9845125111.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1115215477) and next prime (1115215501).

It can be written as a sum of positive squares in only one way, i.e., 717811264 + 397404225 = 26792^2 + 19935^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115215489 - 2¹⁵ = 1115182721 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115615489) 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, 557607744 + 557607745.

It is an arithmetic number, because the mean of its divisors is an integer number (557607745).

Almost surely, 2^1115215489 is an apocalyptic number.

It is an amenable number.

1115215489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115215489 is an equidigital number, since it uses as much as digits as its factorization.

1115215489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 37.

The square root of 1115215489 is about 33394.8422514615. The cubic root of 1115215489 is about 1037.0179271798.

The spelling of 1115215489 in words is "one billion, one hundred fifteen million, two hundred fifteen thousand, four hundred eighty-nine".