1681110612 has 60 divisors (see below), whose sum is σ = 4400198880. Its totient is φ = 559676304.

The previous prime is 1681110583. The next prime is 1681110623. The reversal of 1681110612 is 2160111861.

It is a super-2 number, since 2×1681110612² = 5652265779558029088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 304089 + ... + 309567.

It is an arithmetic number, because the mean of its divisors is an integer number (73336648).

Almost surely, 2^1681110612 is an apocalyptic number.

1681110612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1681110612 is an abundant number, since it is smaller than the sum of its proper divisors (2719088268).

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

1681110612 is a wasteful number, since it uses less digits than its factorization.

1681110612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6442 (or 6431 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 1681110612 is about 41001.3489046397. The cubic root of 1681110612 is about 1189.0462928107.

The spelling of 1681110612 in words is "one billion, six hundred eighty-one million, one hundred ten thousand, six hundred twelve".