18050000001 has 16 divisors (see below), whose sum is σ = 26276177088. Its totient is φ = 10930380800.

The previous prime is 18049999999. The next prime is 18050000029. The reversal of 18050000001 is 10000005081.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 18050000001 - 2¹ = 18049999999 is a prime.

It is a super-2 number, since 2×18050000001² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18050000041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184560 + ... + 264881.

It is an arithmetic number, because the mean of its divisors is an integer number (1642261068).

Almost surely, 2^18050000001 is an apocalyptic number.

18050000001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18050000001 is a deficient number, since it is larger than the sum of its proper divisors (8226177087).

18050000001 is a wasteful number, since it uses less digits than its factorization.

18050000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450672.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 18050000001 its reverse (10000005081), we get a palindrome (28050005082).

The spelling of 18050000001 in words is "eighteen billion, fifty million, one", and thus it is an aban number and an uban number.