1116681001 has 4 divisors (see below), whose sum is σ = 1120203972. Its totient is φ = 1113158032.

The previous prime is 1116680993. The next prime is 1116681019. The reversal of 1116681001 is 1001866111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 246490000 + 870191001 = 15700^2 + 29499^2 .

It is a cyclic number.

It is not a de Polignac number, because 1116681001 - 2³ = 1116680993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1116681031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1761010 + ... + 1761643.

It is an arithmetic number, because the mean of its divisors is an integer number (280050993).

Almost surely, 2^1116681001 is an apocalyptic number.

It is an amenable number.

1116681001 is a deficient number, since it is larger than the sum of its proper divisors (3522971).

1116681001 is an equidigital number, since it uses as much as digits as its factorization.

1116681001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3522970.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 1116681001 is about 33416.7772383873. Note that the first 3 decimals coincide. The cubic root of 1116681001 is about 1037.4719790371.

The spelling of 1116681001 in words is "one billion, one hundred sixteen million, six hundred eighty-one thousand, one".