1680750918 has 64 divisors (see below), whose sum is σ = 4656637440. Its totient is φ = 436557600.

The previous prime is 1680750889. The next prime is 1680750919. The reversal of 1680750918 is 8190570861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680750919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 197953 + ... + 206268.

It is an arithmetic number, because the mean of its divisors is an integer number (72759960).

Almost surely, 2^1680750918 is an apocalyptic number.

1680750918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1680750918 is an abundant number, since it is smaller than the sum of its proper divisors (2975886522).

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

1680750918 is a wasteful number, since it uses less digits than its factorization.

1680750918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404250 (or 404244 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 45.

The square root of 1680750918 is about 40996.9623021023. The cubic root of 1680750918 is about 1188.9614831376.

The spelling of 1680750918 in words is "one billion, six hundred eighty million, seven hundred fifty thousand, nine hundred eighteen".