180864247 has 2 divisors, whose sum is σ = 180864248. Its totient is φ = 180864246.

The previous prime is 180864239. The next prime is 180864361. The reversal of 180864247 is 742468081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 180864247 - 2³ = 180864239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180864217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90432123 + 90432124.

It is an arithmetic number, because the mean of its divisors is an integer number (90432124).

Almost surely, 2^180864247 is an apocalyptic number.

180864247 is a deficient number, since it is larger than the sum of its proper divisors (1).

180864247 is an equidigital number, since it uses as much as digits as its factorization.

180864247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 180864247 is about 13448.5778802073. The cubic root of 180864247 is about 565.5238277660.

The spelling of 180864247 in words is "one hundred eighty million, eight hundred sixty-four thousand, two hundred forty-seven".