74194457 has 2 divisors, whose sum is σ = 74194458. Its totient is φ = 74194456.

The previous prime is 74194451. The next prime is 74194489. The reversal of 74194457 is 75449147.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56310016 + 17884441 = 7504^2 + 4229^2 .

It is a cyclic number.

It is not a de Polignac number, because 74194457 - 2⁸ = 74194201 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74194451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37097228 + 37097229.

It is an arithmetic number, because the mean of its divisors is an integer number (37097229).

Almost surely, 2^74194457 is an apocalyptic number.

It is an amenable number.

74194457 is a deficient number, since it is larger than the sum of its proper divisors (1).

74194457 is an equidigital number, since it uses as much as digits as its factorization.

74194457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 41.

The square root of 74194457 is about 8613.6204351016. The cubic root of 74194457 is about 420.2010696359.

The spelling of 74194457 in words is "seventy-four million, one hundred ninety-four thousand, four hundred fifty-seven".