180216887 has 2 divisors, whose sum is σ = 180216888. Its totient is φ = 180216886.

The previous prime is 180216877. The next prime is 180216917. The reversal of 180216887 is 788612081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 180216887 - 2⁴ = 180216871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180216877) 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, 90108443 + 90108444.

It is an arithmetic number, because the mean of its divisors is an integer number (90108444).

Almost surely, 2^180216887 is an apocalyptic number.

180216887 is a deficient number, since it is larger than the sum of its proper divisors (1).

180216887 is an equidigital number, since it uses as much as digits as its factorization.

180216887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 41.

The square root of 180216887 is about 13424.4883328937. The cubic root of 180216887 is about 564.8483023968.

The spelling of 180216887 in words is "one hundred eighty million, two hundred sixteen thousand, eight hundred eighty-seven".