74164091 has 2 divisors, whose sum is σ = 74164092. Its totient is φ = 74164090.

The previous prime is 74164061. The next prime is 74164093. The reversal of 74164091 is 19046147.

It is a strong prime.

It is an emirp because it is prime and its reverse (19046147) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74164091 is a prime.

Together with 74164093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74164093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37082045 + 37082046.

It is an arithmetic number, because the mean of its divisors is an integer number (37082046).

Almost surely, 2^74164091 is an apocalyptic number.

74164091 is a deficient number, since it is larger than the sum of its proper divisors (1).

74164091 is an equidigital number, since it uses as much as digits as its factorization.

74164091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 74164091 is about 8611.8575812655. The cubic root of 74164091 is about 420.1437357624.

The spelling of 74164091 in words is "seventy-four million, one hundred sixty-four thousand, ninety-one".