1016758489 has 2 divisors, whose sum is σ = 1016758490. Its totient is φ = 1016758488.

The previous prime is 1016758487. The next prime is 1016758577. The reversal of 1016758489 is 9848576101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 857494089 + 159264400 = 29283^2 + 12620^2 .

It is a cyclic number.

It is not a de Polignac number, because 1016758489 - 2¹ = 1016758487 is a prime.

Together with 1016758487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1016758487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 508379244 + 508379245.

It is an arithmetic number, because the mean of its divisors is an integer number (508379245).

Almost surely, 2^1016758489 is an apocalyptic number.

It is an amenable number.

1016758489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1016758489 is an equidigital number, since it uses as much as digits as its factorization.

1016758489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 49.

The square root of 1016758489 is about 31886.6506394134. The cubic root of 1016758489 is about 1005.5552451055. Note that the first 3 decimals are identical.

The spelling of 1016758489 in words is "one billion, sixteen million, seven hundred fifty-eight thousand, four hundred eighty-nine".