1689221922 has 16 divisors (see below), whose sum is σ = 3379952352. Its totient is φ = 562822560.

The previous prime is 1689221921. The next prime is 1689221927. The reversal of 1689221922 is 2291229861.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1689221921) 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 7 ways as a sum of consecutive naturals, for example, 48028 + ... + 75399.

It is an arithmetic number, because the mean of its divisors is an integer number (211247022).

Almost surely, 2^1689221922 is an apocalyptic number.

1689221922 is an abundant number, since it is smaller than the sum of its proper divisors (1690730430).

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

1689221922 is a wasteful number, since it uses less digits than its factorization.

1689221922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125713.

The product of its digits is 62208, while the sum is 42.

The square root of 1689221922 is about 41100.1450362404. The cubic root of 1689221922 is about 1190.9555966219.

The spelling of 1689221922 in words is "one billion, six hundred eighty-nine million, two hundred twenty-one thousand, nine hundred twenty-two".