1680229805 has 8 divisors (see below), whose sum is σ = 2021090400. Its totient is φ = 1340974096.

The previous prime is 1680229783. The next prime is 1680229823. The reversal of 1680229805 is 5089220861.

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 1680229805 - 2⁸ = 1680229549 is a prime.

It is a super-2 number, since 2×1680229805² = 5646344395220676050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398915 + ... + 403104.

It is an arithmetic number, because the mean of its divisors is an integer number (252636300).

Almost surely, 2^1680229805 is an apocalyptic number.

It is an amenable number.

1680229805 is a deficient number, since it is larger than the sum of its proper divisors (340860595).

1680229805 is an equidigital number, since it uses as much as digits as its factorization.

1680229805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802443.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 1680229805 is about 40990.6063019322. The cubic root of 1680229805 is about 1188.8385921680.

The spelling of 1680229805 in words is "one billion, six hundred eighty million, two hundred twenty-nine thousand, eight hundred five".