1681088112 has 240 divisors, whose sum is σ = 5481934848. Its totient is φ = 475269120.

The previous prime is 1681088107. The next prime is 1681088131. The reversal of 1681088112 is 2118801861.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4389073 + ... + 4389455.

Almost surely, 2^1681088112 is an apocalyptic number.

1681088112 is a gapful number since it is divisible by the number (12) 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 1681088112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2740967424).

1681088112 is an abundant number, since it is smaller than the sum of its proper divisors (3800846736).

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

1681088112 is a wasteful number, since it uses less digits than its factorization.

1681088112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 36.

The square root of 1681088112 is about 41001.0745225049. The cubic root of 1681088112 is about 1189.0409880515.

Adding to 1681088112 its reverse (2118801861), we get a palindrome (3799889973).

The spelling of 1681088112 in words is "one billion, six hundred eighty-one million, eighty-eight thousand, one hundred twelve".