181100027 has 2 divisors, whose sum is σ = 181100028. Its totient is φ = 181100026.

The previous prime is 181100011. The next prime is 181100053. The reversal of 181100027 is 720001181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 181100027 - 2⁴ = 181100011 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 181099981 and 181100008.

It is not a weakly prime, because it can be changed into another prime (181100057) 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 as a sum of consecutive naturals, namely, 90550013 + 90550014.

It is an arithmetic number, because the mean of its divisors is an integer number (90550014).

Almost surely, 2^181100027 is an apocalyptic number.

181100027 is a deficient number, since it is larger than the sum of its proper divisors (1).

181100027 is an equidigital number, since it uses as much as digits as its factorization.

181100027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 181100027 is about 13457.3410077920. The cubic root of 181100027 is about 565.7694656051.

The spelling of 181100027 in words is "one hundred eighty-one million, one hundred thousand, twenty-seven".