1681112642 has 16 divisors (see below), whose sum is σ = 2870517312. Its totient is φ = 730918320.

The previous prime is 1681112633. The next prime is 1681112663. The reversal of 1681112642 is 2462111861.

It is a super-2 number, since 2×1681112642² = 5652279430184440328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1681112599 and 1681112608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1660673 + ... + 1661684.

It is an arithmetic number, because the mean of its divisors is an integer number (179407332).

Almost surely, 2^1681112642 is an apocalyptic number.

1681112642 is a deficient number, since it is larger than the sum of its proper divisors (1189404670).

1681112642 is a wasteful number, since it uses less digits than its factorization.

1681112642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3322393.

The product of its digits is 4608, while the sum is 32.

The square root of 1681112642 is about 41001.3736599153. The cubic root of 1681112642 is about 1189.0467714155.

The spelling of 1681112642 in words is "one billion, six hundred eighty-one million, one hundred twelve thousand, six hundred forty-two".