74814149 has 2 divisors, whose sum is σ = 74814150. Its totient is φ = 74814148.

The previous prime is 74814139. The next prime is 74814151. The reversal of 74814149 is 94141847.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65772100 + 9042049 = 8110^2 + 3007^2 .

It is an emirp because it is prime and its reverse (94141847) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74814149 - 2¹⁶ = 74748613 is a prime.

Together with 74814151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74814139) 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, 37407074 + 37407075.

It is an arithmetic number, because the mean of its divisors is an integer number (37407075).

Almost surely, 2^74814149 is an apocalyptic number.

It is an amenable number.

74814149 is a deficient number, since it is larger than the sum of its proper divisors (1).

74814149 is an equidigital number, since it uses as much as digits as its factorization.

74814149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 38.

The square root of 74814149 is about 8649.5172697671. The cubic root of 74814149 is about 421.3677049590.

The spelling of 74814149 in words is "seventy-four million, eight hundred fourteen thousand, one hundred forty-nine".