1688080992 has 96 divisors (see below), whose sum is σ = 5023307520. Its totient is φ = 492065280.

The previous prime is 1688080967. The next prime is 1688081033. The reversal of 1688080992 is 2990808861.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11884 + ... + 59307.

It is an arithmetic number, because the mean of its divisors is an integer number (52326120).

Almost surely, 2^1688080992 is an apocalyptic number.

1688080992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1688080992 is an abundant number, since it is smaller than the sum of its proper divisors (3335226528).

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

1688080992 is a wasteful number, since it uses less digits than its factorization.

1688080992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71236 (or 71228 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 51.

The square root of 1688080992 is about 41086.2628137435. The cubic root of 1688080992 is about 1190.6874054931.

The spelling of 1688080992 in words is "one billion, six hundred eighty-eight million, eighty thousand, nine hundred ninety-two".