1688080273 has 4 divisors (see below), whose sum is σ = 1841542128. Its totient is φ = 1534618420.

The previous prime is 1688080253. The next prime is 1688080313. The reversal of 1688080273 is 3720808861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1688080273 - 2¹⁷ = 1687949201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1688080223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76730911 + ... + 76730932.

It is an arithmetic number, because the mean of its divisors is an integer number (460385532).

Almost surely, 2^1688080273 is an apocalyptic number.

It is an amenable number.

1688080273 is a deficient number, since it is larger than the sum of its proper divisors (153461855).

1688080273 is a wasteful number, since it uses less digits than its factorization.

1688080273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153461854.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 1688080273 is about 41086.2540638594. The cubic root of 1688080273 is about 1190.6872364442.

The spelling of 1688080273 in words is "one billion, six hundred eighty-eight million, eighty thousand, two hundred seventy-three".