1688816104 has 16 divisors (see below), whose sum is σ = 3172986720. Its totient is φ = 842686320.

The previous prime is 1688816089. The next prime is 1688816111. The reversal of 1688816104 is 4016188861.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211044 + ... + 218899.

It is an arithmetic number, because the mean of its divisors is an integer number (198311670).

Almost surely, 2^1688816104 is an apocalyptic number.

It is an amenable number.

1688816104 is a deficient number, since it is larger than the sum of its proper divisors (1484170616).

1688816104 is a wasteful number, since it uses less digits than its factorization.

1688816104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430440 (or 430436 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 43.

The square root of 1688816104 is about 41095.2077984769. The cubic root of 1688816104 is about 1190.8602174179.

The spelling of 1688816104 in words is "one billion, six hundred eighty-eight million, eight hundred sixteen thousand, one hundred four".