1688833338 has 16 divisors (see below), whose sum is σ = 3381618240. Its totient is φ = 562285856.

The previous prime is 1688833313. The next prime is 1688833339. The reversal of 1688833338 is 8333388861.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1688833339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159078 + ... + 169361.

It is an arithmetic number, because the mean of its divisors is an integer number (211351140).

Almost surely, 2^1688833338 is an apocalyptic number.

1688833338 is an abundant number, since it is smaller than the sum of its proper divisors (1692784902).

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

1688833338 is a wasteful number, since it uses less digits than its factorization.

1688833338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329301.

The product of its digits is 1990656, while the sum is 51.

The square root of 1688833338 is about 41095.4174817582. The cubic root of 1688833338 is about 1190.8642682270.

The spelling of 1688833338 in words is "one billion, six hundred eighty-eight million, eight hundred thirty-three thousand, three hundred thirty-eight".