181004497 has 2 divisors, whose sum is σ = 181004498. Its totient is φ = 181004496.

The previous prime is 181004479. The next prime is 181004513. The reversal of 181004497 is 794400181.

181004497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (181004479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109077136 + 71927361 = 10444^2 + 8481^2 .

It is a cyclic number.

It is not a de Polignac number, because 181004497 - 2¹⁵ = 180971729 is a prime.

It is not a weakly prime, because it can be changed into another prime (181004297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90502248 + 90502249.

It is an arithmetic number, because the mean of its divisors is an integer number (90502249).

Almost surely, 2^181004497 is an apocalyptic number.

It is an amenable number.

181004497 is a deficient number, since it is larger than the sum of its proper divisors (1).

181004497 is an equidigital number, since it uses as much as digits as its factorization.

181004497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 181004497 is about 13453.7911757244. The cubic root of 181004497 is about 565.6699672521.

The spelling of 181004497 in words is "one hundred eighty-one million, four thousand, four hundred ninety-seven".