181934941097 has 12 divisors (see below), whose sum is σ = 225150258240. Its totient is φ = 143948523888.

The previous prime is 181934941079. The next prime is 181934941109. The reversal of 181934941097 is 790149439181.

181934941097 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 181934941097 - 2¹⁴ = 181934924713 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (181934941597) 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 11 ways as a sum of consecutive naturals, for example, 76894397 + ... + 76896762.

It is an arithmetic number, because the mean of its divisors is an integer number (18762521520).

Almost surely, 2^181934941097 is an apocalyptic number.

It is an amenable number.

181934941097 is a deficient number, since it is larger than the sum of its proper divisors (43215317143).

181934941097 is a wasteful number, since it uses less digits than its factorization.

181934941097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153791192 (or 153791179 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 56.

The spelling of 181934941097 in words is "one hundred eighty-one billion, nine hundred thirty-four million, nine hundred forty-one thousand, ninety-seven".