74166149 has 2 divisors, whose sum is σ = 74166150. Its totient is φ = 74166148.

The previous prime is 74166143. The next prime is 74166181. The reversal of 74166149 is 94166147.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67535524 + 6630625 = 8218^2 + 2575^2 .

It is a cyclic number.

It is not a de Polignac number, because 74166149 - 2²⁰ = 73117573 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74166143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37083074 + 37083075.

It is an arithmetic number, because the mean of its divisors is an integer number (37083075).

Almost surely, 2^74166149 is an apocalyptic number.

It is an amenable number.

74166149 is a deficient number, since it is larger than the sum of its proper divisors (1).

74166149 is an equidigital number, since it uses as much as digits as its factorization.

74166149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 74166149 is about 8611.9770668529. The cubic root of 74166149 is about 420.1476219549.

The spelling of 74166149 in words is "seventy-four million, one hundred sixty-six thousand, one hundred forty-nine".