179800013 has 2 divisors, whose sum is σ = 179800014. Its totient is φ = 179800012.

The previous prime is 179800003. The next prime is 179800067. The reversal of 179800013 is 310008971.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136936804 + 42863209 = 11702^2 + 6547^2 .

It is a cyclic number.

It is not a de Polignac number, because 179800013 - 2²² = 175605709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (179800003) 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, 89900006 + 89900007.

It is an arithmetic number, because the mean of its divisors is an integer number (89900007).

Almost surely, 2^179800013 is an apocalyptic number.

It is an amenable number.

179800013 is a deficient number, since it is larger than the sum of its proper divisors (1).

179800013 is an equidigital number, since it uses as much as digits as its factorization.

179800013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 179800013 is about 13408.9527182402. The cubic root of 179800013 is about 564.4124343145.

Adding to 179800013 its reverse (310008971), we get a palindrome (489808984).

The spelling of 179800013 in words is "one hundred seventy-nine million, eight hundred thousand, thirteen".