180799 has 2 divisors, whose sum is σ = 180800. Its totient is φ = 180798.
The previous prime is 180797. The next prime is 180811. The reversal of 180799 is 997081.
It is a weak prime.
It is an emirp because it is prime and its reverse (997081) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 180799 - 21 = 180797 is a prime.
Together with 180797, it forms a pair of twin primes.
180799 is a lucky number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (180793) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90399 + 90400.
It is an arithmetic number, because the mean of its divisors is an integer number (90400).
2180799 is an apocalyptic number.
180799 is a deficient number, since it is larger than the sum of its proper divisors (1).
180799 is an equidigital number, since it uses as much as digits as its factorization.
180799 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 4536, while the sum is 34.
The square root of 180799 is about 425.2046566067. The cubic root of 180799 is about 56.5455815114.
It can be divided in two parts, 180 and 799, that added together give a palindrome (979).
The spelling of 180799 in words is "one hundred eighty thousand, seven hundred ninety-nine".
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