181936373011 has 2 divisors, whose sum is σ = 181936373012. Its totient is φ = 181936373010.

The previous prime is 181936373009. The next prime is 181936373071. The reversal of 181936373011 is 110373639181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 181936373011 - 2¹ = 181936373009 is a prime.

It is a super-2 number, since 2×181936373011² (a number of 23 digits) contains 22 as substring.

Together with 181936373009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (181936373071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90968186505 + 90968186506.

It is an arithmetic number, because the mean of its divisors is an integer number (90968186506).

Almost surely, 2^181936373011 is an apocalyptic number.

181936373011 is a deficient number, since it is larger than the sum of its proper divisors (1).

181936373011 is an equidigital number, since it uses as much as digits as its factorization.

181936373011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 181936373011 in words is "one hundred eighty-one billion, nine hundred thirty-six million, three hundred seventy-three thousand, eleven".