73800109 has 2 divisors, whose sum is σ = 73800110. Its totient is φ = 73800108.

The previous prime is 73800053. The next prime is 73800121. The reversal of 73800109 is 90100837.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68724100 + 5076009 = 8290^2 + 2253^2 .

It is an emirp because it is prime and its reverse (90100837) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73800109 - 2⁷ = 73799981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73800149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36900054 + 36900055.

It is an arithmetic number, because the mean of its divisors is an integer number (36900055).

Almost surely, 2^73800109 is an apocalyptic number.

It is an amenable number.

73800109 is a deficient number, since it is larger than the sum of its proper divisors (1).

73800109 is an equidigital number, since it uses as much as digits as its factorization.

73800109 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 28.

The square root of 73800109 is about 8590.6989820387. The cubic root of 73800109 is about 419.4552821192.

The spelling of 73800109 in words is "seventy-three million, eight hundred thousand, one hundred nine".