1968081 has 8 divisors (see below), whose sum is σ = 2634240. Its totient is φ = 1306992.

The previous prime is 1968079. The next prime is 1968103. The reversal of 1968081 is 1808691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1968081 - 2¹ = 1968079 is a prime.

It is a super-2 number, since 2×1968081² = 7746685645122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1968061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241 + ... + 1998.

It is an arithmetic number, because the mean of its divisors is an integer number (329280).

2^1968081 is an apocalyptic number.

It is an amenable number.

1968081 is a deficient number, since it is larger than the sum of its proper divisors (666159).

1968081 is a wasteful number, since it uses less digits than its factorization.

1968081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2535.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 1968081 is about 1402.8831027566. The cubic root of 1968081 is about 125.3182503793.

The spelling of 1968081 in words is "one million, nine hundred sixty-eight thousand, eighty-one".