1015532489 has 2 divisors, whose sum is σ = 1015532490. Its totient is φ = 1015532488.

The previous prime is 1015532459. The next prime is 1015532521. The reversal of 1015532489 is 9842355101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 688537600 + 326994889 = 26240^2 + 18083^2 .

It is a cyclic number.

It is not a de Polignac number, because 1015532489 - 2⁸ = 1015532233 is a prime.

It is not a weakly prime, because it can be changed into another prime (1015532429) 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, 507766244 + 507766245.

It is an arithmetic number, because the mean of its divisors is an integer number (507766245).

Almost surely, 2^1015532489 is an apocalyptic number.

It is an amenable number.

1015532489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1015532489 is an equidigital number, since it uses as much as digits as its factorization.

1015532489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 1015532489 is about 31867.4204949193. The cubic root of 1015532489 is about 1005.1509188140.

The spelling of 1015532489 in words is "one billion, fifteen million, five hundred thirty-two thousand, four hundred eighty-nine".