1688868853 has 16 divisors (see below), whose sum is σ = 2000234880. Its totient is φ = 1395205056.

The previous prime is 1688868851. The next prime is 1688868931. The reversal of 1688868853 is 3588688861.

It is not a de Polignac number, because 1688868853 - 2¹ = 1688868851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1688868791 and 1688868800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1688868851) 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 15 ways as a sum of consecutive naturals, for example, 112075 + ... + 126247.

It is an arithmetic number, because the mean of its divisors is an integer number (125014680).

Almost surely, 2^1688868853 is an apocalyptic number.

It is an amenable number.

1688868853 is a deficient number, since it is larger than the sum of its proper divisors (311366027).

1688868853 is a wasteful number, since it uses less digits than its factorization.

1688868853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14796.

The product of its digits is 17694720, while the sum is 61.

The square root of 1688868853 is about 41095.8495836258. The cubic root of 1688868853 is about 1190.8726158532.

The spelling of 1688868853 in words is "one billion, six hundred eighty-eight million, eight hundred sixty-eight thousand, eight hundred fifty-three".