74194147 has 2 divisors, whose sum is σ = 74194148. Its totient is φ = 74194146.

The previous prime is 74194111. The next prime is 74194157. The reversal of 74194147 is 74149147.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74194147 - 2²³ = 65805539 is a prime.

It is not a weakly prime, because it can be changed into another prime (74194157) 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, 37097073 + 37097074.

It is an arithmetic number, because the mean of its divisors is an integer number (37097074).

Almost surely, 2^74194147 is an apocalyptic number.

74194147 is a deficient number, since it is larger than the sum of its proper divisors (1).

74194147 is an equidigital number, since it uses as much as digits as its factorization.

74194147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 37.

The square root of 74194147 is about 8613.6024403266. The cubic root of 74194147 is about 420.2004844057.

The spelling of 74194147 in words is "seventy-four million, one hundred ninety-four thousand, one hundred forty-seven".