74131091 has 8 divisors (see below), whose sum is σ = 76377264. Its totient is φ = 71897760.

The previous prime is 74131087. The next prime is 74131117. The reversal of 74131091 is 19013147.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74131091 - 2² = 74131087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74131091.

It is not an unprimeable number, because it can be changed into a prime (74131061) 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 in 7 ways as a sum of consecutive naturals, for example, 9221 + ... + 15273.

It is an arithmetic number, because the mean of its divisors is an integer number (9547158).

Almost surely, 2^74131091 is an apocalyptic number.

74131091 is a deficient number, since it is larger than the sum of its proper divisors (2246173).

74131091 is a wasteful number, since it uses less digits than its factorization.

74131091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6421.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 74131091 is about 8609.9414051432. The cubic root of 74131091 is about 420.0814109004.

The spelling of 74131091 in words is "seventy-four million, one hundred thirty-one thousand, ninety-one".