74328109 has 2 divisors, whose sum is σ = 74328110. Its totient is φ = 74328108.

The previous prime is 74328053. The next prime is 74328119. The reversal of 74328109 is 90182347.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73051209 + 1276900 = 8547^2 + 1130^2 .

It is an emirp because it is prime and its reverse (90182347) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74328109 - 2⁹ = 74327597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74328119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37164054 + 37164055.

It is an arithmetic number, because the mean of its divisors is an integer number (37164055).

Almost surely, 2^74328109 is an apocalyptic number.

It is an amenable number.

74328109 is a deficient number, since it is larger than the sum of its proper divisors (1).

74328109 is an equidigital number, since it uses as much as digits as its factorization.

74328109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 74328109 is about 8621.3751223340. The cubic root of 74328109 is about 420.4532314423.

The spelling of 74328109 in words is "seventy-four million, three hundred twenty-eight thousand, one hundred nine".