1681068708 has 96 divisors (see below), whose sum is σ = 4785352320. Its totient is φ = 506113920.

The previous prime is 1681068691. The next prime is 1681068709. The reversal of 1681068708 is 8078601861.

It is not an unprimeable number, because it can be changed into a prime (1681068709) 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, 182010 + ... + 191022.

It is an arithmetic number, because the mean of its divisors is an integer number (49847420).

Almost surely, 2^1681068708 is an apocalyptic number.

1681068708 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1681068708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2392676160).

1681068708 is an abundant number, since it is smaller than the sum of its proper divisors (3104283612).

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

1681068708 is a wasteful number, since it uses less digits than its factorization.

1681068708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9194 (or 9186 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 1681068708 is about 41000.8378938772. The cubic root of 1681068708 is about 1189.0364131891.

The spelling of 1681068708 in words is "one billion, six hundred eighty-one million, sixty-eight thousand, seven hundred eight".