1688868874 has 48 divisors (see below), whose sum is σ = 3214165248. Its totient is φ = 651420000.

The previous prime is 1688868851. The next prime is 1688868931. The reversal of 1688868874 is 4788688861.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166159 + ... + 176029.

It is an arithmetic number, because the mean of its divisors is an integer number (66961776).

Almost surely, 2^1688868874 is an apocalyptic number.

1688868874 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1688868874 is a deficient number, since it is larger than the sum of its proper divisors (1525296374).

1688868874 is a wasteful number, since it uses less digits than its factorization.

1688868874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10003 (or 9992 counting only the distinct ones).

The product of its digits is 33030144, while the sum is 64.

The square root of 1688868874 is about 41095.8498391261. The cubic root of 1688868874 is about 1190.8726207891.

The spelling of 1688868874 in words is "one billion, six hundred eighty-eight million, eight hundred sixty-eight thousand, eight hundred seventy-four".