1688942922 has 32 divisors (see below), whose sum is σ = 3479280000. Its totient is φ = 546170688.

The previous prime is 1688942921. The next prime is 1688942939. The reversal of 1688942922 is 2292498861.

It is not an unprimeable number, because it can be changed into a prime (1688942921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66579 + ... + 88377.

It is an arithmetic number, because the mean of its divisors is an integer number (108727500).

Almost surely, 2^1688942922 is an apocalyptic number.

1688942922 is an abundant number, since it is smaller than the sum of its proper divisors (1790337078).

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

1688942922 is a wasteful number, since it uses less digits than its factorization.

1688942922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22190.

The product of its digits is 995328, while the sum is 51.

The square root of 1688942922 is about 41096.7507474739. The cubic root of 1688942922 is about 1190.8900250309.

The spelling of 1688942922 in words is "one billion, six hundred eighty-eight million, nine hundred forty-two thousand, nine hundred twenty-two".