18872042001 has 32 divisors (see below), whose sum is σ = 26331177600. Its totient is φ = 12007564800.

The previous prime is 18872041999. The next prime is 18872042009. The reversal of 18872042001 is 10024027881.

It is a happy number.

It is not a de Polignac number, because 18872042001 - 2¹ = 18872041999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18872042009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6914005 + ... + 6916733.

It is an arithmetic number, because the mean of its divisors is an integer number (822849300).

Almost surely, 2^18872042001 is an apocalyptic number.

It is an amenable number.

18872042001 is a deficient number, since it is larger than the sum of its proper divisors (7459135599).

18872042001 is a wasteful number, since it uses less digits than its factorization.

18872042001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3649.

The product of its (nonzero) digits is 7168, while the sum is 33.

Adding to 18872042001 its reverse (10024027881), we get a palindrome (28896069882).

The spelling of 18872042001 in words is "eighteen billion, eight hundred seventy-two million, forty-two thousand, one".