1115513489 has 2 divisors, whose sum is σ = 1115513490. Its totient is φ = 1115513488.

The previous prime is 1115513471. The next prime is 1115513543. The reversal of 1115513489 is 9843155111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 797497600 + 318015889 = 28240^2 + 17833^2 .

It is an emirp because it is prime and its reverse (9843155111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1115513489 - 2⁸ = 1115513233 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115513459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557756744 + 557756745.

It is an arithmetic number, because the mean of its divisors is an integer number (557756745).

Almost surely, 2^1115513489 is an apocalyptic number.

It is an amenable number.

1115513489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115513489 is an equidigital number, since it uses as much as digits as its factorization.

1115513489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 38.

The square root of 1115513489 is about 33399.3037202873. The cubic root of 1115513489 is about 1037.1102871538.

The spelling of 1115513489 in words is "one billion, one hundred fifteen million, five hundred thirteen thousand, four hundred eighty-nine".