18182010001 has 4 divisors (see below), whose sum is σ = 18362030004. Its totient is φ = 18001990000.

The previous prime is 18182009987. The next prime is 18182010023. The reversal of 18182010001 is 10001028181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10001028181 = 101 ⋅99020081.

It can be written as a sum of positive squares in 2 ways, for example, as 14399760001 + 3782250000 = 119999^2 + 61500^2 .

It is a cyclic number.

It is not a de Polignac number, because 18182010001 - 2⁷ = 18182009873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18182010031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90009850 + ... + 90010051.

It is an arithmetic number, because the mean of its divisors is an integer number (4590507501).

Almost surely, 2^18182010001 is an apocalyptic number.

It is an amenable number.

18182010001 is a deficient number, since it is larger than the sum of its proper divisors (180020003).

18182010001 is a wasteful number, since it uses less digits than its factorization.

18182010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180020002.

The product of its (nonzero) digits is 128, while the sum is 22.

Adding to 18182010001 its reverse (10001028181), we get a palindrome (28183038182).

The spelling of 18182010001 in words is "eighteen billion, one hundred eighty-two million, ten thousand, one".