74031091 has 2 divisors, whose sum is σ = 74031092. Its totient is φ = 74031090.

The previous prime is 74031071. The next prime is 74031121. The reversal of 74031091 is 19013047.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74031091 - 2⁷ = 74030963 is a prime.

It is not a weakly prime, because it can be changed into another prime (74031031) 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, 37015545 + 37015546.

It is an arithmetic number, because the mean of its divisors is an integer number (37015546).

Almost surely, 2^74031091 is an apocalyptic number.

74031091 is a deficient number, since it is larger than the sum of its proper divisors (1).

74031091 is an equidigital number, since it uses as much as digits as its factorization.

74031091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 74031091 is about 8604.1322049350. The cubic root of 74031091 is about 419.8924346611.

The spelling of 74031091 in words is "seventy-four million, thirty-one thousand, ninety-one".