1688341955 has 8 divisors (see below), whose sum is σ = 2040586800. Its totient is φ = 1340955936.

The previous prime is 1688341877. The next prime is 1688341969. The reversal of 1688341955 is 5591438861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1688341955 - 2¹⁴ = 1688325571 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1213940 + ... + 1215329.

It is an arithmetic number, because the mean of its divisors is an integer number (255073350).

Almost surely, 2^1688341955 is an apocalyptic number.

1688341955 is a deficient number, since it is larger than the sum of its proper divisors (352244845).

1688341955 is a wasteful number, since it uses less digits than its factorization.

1688341955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429413.

The product of its digits is 1036800, while the sum is 50.

The square root of 1688341955 is about 41089.4384848467. The cubic root of 1688341955 is about 1190.7487590554.

The spelling of 1688341955 in words is "one billion, six hundred eighty-eight million, three hundred forty-one thousand, nine hundred fifty-five".