1689010513 has 4 divisors (see below), whose sum is σ = 1694775348. Its totient is φ = 1683245680.

The previous prime is 1689010511. The next prime is 1689010549. The reversal of 1689010513 is 3150109861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3150109861 = 7507 ⋅419623.

It can be written as a sum of positive squares in 2 ways, for example, as 1613789584 + 75220929 = 40172^2 + 8673^2 .

It is a cyclic number.

It is not a de Polignac number, because 1689010513 - 2¹ = 1689010511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1689010511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2881978 + ... + 2882563.

It is an arithmetic number, because the mean of its divisors is an integer number (423693837).

Almost surely, 2^1689010513 is an apocalyptic number.

It is an amenable number.

1689010513 is a deficient number, since it is larger than the sum of its proper divisors (5764835).

1689010513 is an equidigital number, since it uses as much as digits as its factorization.

1689010513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5764834.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 1689010513 is about 41097.5730791978. The cubic root of 1689010513 is about 1190.9059111754.

The spelling of 1689010513 in words is "one billion, six hundred eighty-nine million, ten thousand, five hundred thirteen".