1689713033 has 4 divisors (see below), whose sum is σ = 1730925588. Its totient is φ = 1648500480.

The previous prime is 1689713021. The next prime is 1689713041. The reversal of 1689713033 is 3303179861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 414651769 + 1275061264 = 20363^2 + 35708^2 .

It is a cyclic number.

It is not a de Polignac number, because 1689713033 - 2⁴ = 1689713017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 41212513 = 1689713033 / (1 + 6 + 8 + 9 + 7 + 1 + 3 + 0 + 3 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1689713093) 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 in 3 ways as a sum of consecutive naturals, for example, 20606216 + ... + 20606297.

It is an arithmetic number, because the mean of its divisors is an integer number (432731397).

Almost surely, 2^1689713033 is an apocalyptic number.

It is an amenable number.

1689713033 is a deficient number, since it is larger than the sum of its proper divisors (41212555).

1689713033 is an equidigital number, since it uses as much as digits as its factorization.

1689713033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41212554.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 1689713033 is about 41106.1191673454. The cubic root of 1689713033 is about 1191.0710017705.

The spelling of 1689713033 in words is "one billion, six hundred eighty-nine million, seven hundred thirteen thousand, thirty-three".