1689164385 has 8 divisors (see below), whose sum is σ = 2702663040. Its totient is φ = 900887664.

The previous prime is 1689164383. The next prime is 1689164471. The reversal of 1689164385 is 5834619861.

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

It is not a de Polignac number, because 1689164385 - 2¹ = 1689164383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1689164383) 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, 56305465 + ... + 56305494.

It is an arithmetic number, because the mean of its divisors is an integer number (337832880).

Almost surely, 2^1689164385 is an apocalyptic number.

1689164385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1689164385 is a deficient number, since it is larger than the sum of its proper divisors (1013498655).

1689164385 is a wasteful number, since it uses less digits than its factorization.

1689164385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112610967.

The product of its digits is 1244160, while the sum is 51.

The square root of 1689164385 is about 41099.4450692464. The cubic root of 1689164385 is about 1190.9420746586.

The spelling of 1689164385 in words is "one billion, six hundred eighty-nine million, one hundred sixty-four thousand, three hundred eighty-five".