1680868214 has 4 divisors (see below), whose sum is σ = 2521302324. Its totient is φ = 840434106.

The previous prime is 1680868213. The next prime is 1680868253. The reversal of 1680868214 is 4128680861.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680868213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420217052 + ... + 420217055.

It is an arithmetic number, because the mean of its divisors is an integer number (630325581).

Almost surely, 2^1680868214 is an apocalyptic number.

1680868214 is a deficient number, since it is larger than the sum of its proper divisors (840434110).

1680868214 is an equidigital number, since it uses as much as digits as its factorization.

1680868214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840434109.

The product of its (nonzero) digits is 147456, while the sum is 44.

The square root of 1680868214 is about 40998.3928221583. The cubic root of 1680868214 is about 1188.9891408511.

The spelling of 1680868214 in words is "one billion, six hundred eighty million, eight hundred sixty-eight thousand, two hundred fourteen".