1680206532 has 12 divisors (see below), whose sum is σ = 3920481936. Its totient is φ = 560068840.

The previous prime is 1680206513. The next prime is 1680206569. The reversal of 1680206532 is 2356020861.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1680206493 and 1680206502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70008594 + ... + 70008617.

It is an arithmetic number, because the mean of its divisors is an integer number (326706828).

Almost surely, 2^1680206532 is an apocalyptic number.

1680206532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1680206532 is an abundant number, since it is smaller than the sum of its proper divisors (2240275404).

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

1680206532 is a wasteful number, since it uses less digits than its factorization.

1680206532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140017218 (or 140017216 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1680206532 is about 40990.3224188344. The cubic root of 1680206532 is about 1188.8331032426.

The spelling of 1680206532 in words is "one billion, six hundred eighty million, two hundred six thousand, five hundred thirty-two".