181627349 has 2 divisors, whose sum is σ = 181627350. Its totient is φ = 181627348.

The previous prime is 181627331. The next prime is 181627387. The reversal of 181627349 is 943726181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97318225 + 84309124 = 9865^2 + 9182^2 .

It is a cyclic number.

It is not a de Polignac number, because 181627349 - 2¹⁶ = 181561813 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181627049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90813674 + 90813675.

It is an arithmetic number, because the mean of its divisors is an integer number (90813675).

Almost surely, 2^181627349 is an apocalyptic number.

It is an amenable number.

181627349 is a deficient number, since it is larger than the sum of its proper divisors (1).

181627349 is an equidigital number, since it uses as much as digits as its factorization.

181627349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 181627349 is about 13476.9191212235. The cubic root of 181627349 is about 566.3180640601.

The spelling of 181627349 in words is "one hundred eighty-one million, six hundred twenty-seven thousand, three hundred forty-nine".