1689255129 has 8 divisors (see below), whose sum is σ = 2304720352. Its totient is φ = 1099980000.

The previous prime is 1689255109. The next prime is 1689255143. The reversal of 1689255129 is 9215529861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1689255129 - 2⁸ = 1689254873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1689255109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6547372 + ... + 6547629.

It is an arithmetic number, because the mean of its divisors is an integer number (288090044).

Almost surely, 2^1689255129 is an apocalyptic number.

It is an amenable number.

1689255129 is a deficient number, since it is larger than the sum of its proper divisors (615465223).

1689255129 is a wasteful number, since it uses less digits than its factorization.

1689255129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13095047.

The product of its digits is 388800, while the sum is 48.

The square root of 1689255129 is about 41100.5490109317. The cubic root of 1689255129 is about 1190.9634005705.

The spelling of 1689255129 in words is "one billion, six hundred eighty-nine million, two hundred fifty-five thousand, one hundred twenty-nine".