74258813 has 2 divisors, whose sum is σ = 74258814. Its totient is φ = 74258812.

The previous prime is 74258809. The next prime is 74258843. The reversal of 74258813 is 31885247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68773849 + 5484964 = 8293^2 + 2342^2 .

It is an emirp because it is prime and its reverse (31885247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74258813 - 2² = 74258809 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74258803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37129406 + 37129407.

It is an arithmetic number, because the mean of its divisors is an integer number (37129407).

Almost surely, 2^74258813 is an apocalyptic number.

It is an amenable number.

74258813 is a deficient number, since it is larger than the sum of its proper divisors (1).

74258813 is an equidigital number, since it uses as much as digits as its factorization.

74258813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 38.

The square root of 74258813 is about 8617.3553367608. The cubic root of 74258813 is about 420.3225281476.

The spelling of 74258813 in words is "seventy-four million, two hundred fifty-eight thousand, eight hundred thirteen".