1689028059 has 16 divisors (see below), whose sum is σ = 2329564160. Its totient is φ = 1087693920.

The previous prime is 1689028039. The next prime is 1689028067. The reversal of 1689028059 is 9508209861.

It is a happy number.

It is not a de Polignac number, because 1689028059 - 2¹³ = 1689019867 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1689027999 and 1689028017.

It is not an unprimeable number, because it can be changed into a prime (1689028039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39307 + ... + 70164.

It is an arithmetic number, because the mean of its divisors is an integer number (145597760).

Almost surely, 2^1689028059 is an apocalyptic number.

1689028059 is a deficient number, since it is larger than the sum of its proper divisors (640536101).

1689028059 is a wasteful number, since it uses less digits than its factorization.

1689028059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109650.

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 1689028059 is about 41097.7865462363. The cubic root of 1689028059 is about 1190.9100350027.

The spelling of 1689028059 in words is "one billion, six hundred eighty-nine million, twenty-eight thousand, fifty-nine".