1681348912 has 40 divisors (see below), whose sum is σ = 3450205760. Its totient is φ = 791519040.

The previous prime is 1681348897. The next prime is 1681348913. The reversal of 1681348912 is 2198431861.

It is not an unprimeable number, because it can be changed into a prime (1681348913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32587 + ... + 66517.

It is an arithmetic number, because the mean of its divisors is an integer number (86255144).

Almost surely, 2^1681348912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1681348912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1725102880).

1681348912 is an abundant number, since it is smaller than the sum of its proper divisors (1768856848).

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

1681348912 is a wasteful number, since it uses less digits than its factorization.

1681348912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34121 (or 34115 counting only the distinct ones).

The product of its digits is 82944, while the sum is 43.

The square root of 1681348912 is about 41004.2548036176. The cubic root of 1681348912 is about 1189.1024731996.

The spelling of 1681348912 in words is "one billion, six hundred eighty-one million, three hundred forty-eight thousand, nine hundred twelve".