1688145882 has 16 divisors (see below), whose sum is σ = 3391168032. Its totient is φ = 560235920.

The previous prime is 1688145863. The next prime is 1688145911. The reversal of 1688145882 is 2885418861.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 618369 + ... + 621092.

It is an arithmetic number, because the mean of its divisors is an integer number (211948002).

Almost surely, 2^1688145882 is an apocalyptic number.

1688145882 is an abundant number, since it is smaller than the sum of its proper divisors (1703022150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1688145882 is a wasteful number, since it uses less digits than its factorization.

1688145882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239693.

The product of its digits is 983040, while the sum is 51.

The square root of 1688145882 is about 41087.0524861543. The cubic root of 1688145882 is about 1190.7026620114.

The spelling of 1688145882 in words is "one billion, six hundred eighty-eight million, one hundred forty-five thousand, eight hundred eighty-two".