181534049 has 2 divisors, whose sum is σ = 181534050. Its totient is φ = 181534048.

The previous prime is 181534043. The next prime is 181534097. The reversal of 181534049 is 940435181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111091600 + 70442449 = 10540^2 + 8393^2 .

It is a cyclic number.

It is not a de Polignac number, because 181534049 - 2²⁴ = 164756833 is a prime.

It is a super-2 number, since 2×181534049² = 65909221892668802, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (181534043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90767024 + 90767025.

It is an arithmetic number, because the mean of its divisors is an integer number (90767025).

Almost surely, 2^181534049 is an apocalyptic number.

It is an amenable number.

181534049 is a deficient number, since it is larger than the sum of its proper divisors (1).

181534049 is an equidigital number, since it uses as much as digits as its factorization.

181534049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 181534049 is about 13473.4572029602. The cubic root of 181534049 is about 566.2210769679.

The spelling of 181534049 in words is "one hundred eighty-one million, five hundred thirty-four thousand, forty-nine".