180249197 has 2 divisors, whose sum is σ = 180249198. Its totient is φ = 180249196.

The previous prime is 180249187. The next prime is 180249227. The reversal of 180249197 is 791942081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165148201 + 15100996 = 12851^2 + 3886^2 .

It is a cyclic number.

It is not a de Polignac number, because 180249197 - 2¹⁸ = 179987053 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 (180249107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90124598 + 90124599.

It is an arithmetic number, because the mean of its divisors is an integer number (90124599).

Almost surely, 2^180249197 is an apocalyptic number.

It is an amenable number.

180249197 is a deficient number, since it is larger than the sum of its proper divisors (1).

180249197 is an equidigital number, since it uses as much as digits as its factorization.

180249197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 180249197 is about 13425.6916767815. The cubic root of 180249197 is about 564.8820564628.

The spelling of 180249197 in words is "one hundred eighty million, two hundred forty-nine thousand, one hundred ninety-seven".