74168513 has 2 divisors, whose sum is σ = 74168514. Its totient is φ = 74168512.

The previous prime is 74168509. The next prime is 74168519. The reversal of 74168513 is 31586147.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67108864 + 7059649 = 8192^2 + 2657^2 .

It is an emirp because it is prime and its reverse (31586147) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74168513 - 2² = 74168509 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (74168519) 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, 37084256 + 37084257.

It is an arithmetic number, because the mean of its divisors is an integer number (37084257).

Almost surely, 2^74168513 is an apocalyptic number.

It is an amenable number.

74168513 is a deficient number, since it is larger than the sum of its proper divisors (1).

74168513 is an equidigital number, since it uses as much as digits as its factorization.

74168513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 35.

The square root of 74168513 is about 8612.1143164730. The cubic root of 74168513 is about 420.1520858891.

The spelling of 74168513 in words is "seventy-four million, one hundred sixty-eight thousand, five hundred thirteen".