1800513707181 has 16 divisors (see below), whose sum is σ = 2748313956864. Its totient is φ = 1027112217264.

The previous prime is 1800513707131. The next prime is 1800513707191. The reversal of 1800513707181 is 1817073150081.

It is not a de Polignac number, because 1800513707181 - 2¹³ = 1800513698989 is a prime.

It is a super-2 number, since 2×1800513707181² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800513707101) 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, 73018975 + ... + 73043628.

It is an arithmetic number, because the mean of its divisors is an integer number (171769622304).

Almost surely, 2^{1800513707181} is an apocalyptic number.

It is an amenable number.

1800513707181 is a deficient number, since it is larger than the sum of its proper divisors (947800249683).

1800513707181 is a wasteful number, since it uses less digits than its factorization.

1800513707181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146063200.

The product of its (nonzero) digits is 47040, while the sum is 42.

The spelling of 1800513707181 in words is "one trillion, eight hundred billion, five hundred thirteen million, seven hundred seven thousand, one hundred eighty-one".