181049970213 has 24 divisors (see below), whose sum is σ = 299251225728. Its totient is φ = 103327288992.

The previous prime is 181049970197. The next prime is 181049970221. The reversal of 181049970213 is 312079940181.

181049970213 is a `hidden beast` number, since 1 + 81 + 0 + 499 + 70 + 2 + 13 = 666.

181049970213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 181049970213 - 2⁴ = 181049970197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181049970223) 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 23 ways as a sum of consecutive naturals, for example, 1752681 + ... + 1853102.

It is an arithmetic number, because the mean of its divisors is an integer number (12468801072).

Almost surely, 2^181049970213 is an apocalyptic number.

It is an amenable number.

181049970213 is a deficient number, since it is larger than the sum of its proper divisors (118201255515).

181049970213 is a wasteful number, since it uses less digits than its factorization.

181049970213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3606593 (or 3606590 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The spelling of 181049970213 in words is "one hundred eighty-one billion, forty-nine million, nine hundred seventy thousand, two hundred thirteen".