74454189 has 8 divisors (see below), whose sum is σ = 99787392. Its totient is φ = 49378560.

The previous prime is 74454181. The next prime is 74454209. The reversal of 74454189 is 98145447.

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

It is not a de Polignac number, because 74454189 - 2³ = 74454181 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 74454189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74454181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63717 + ... + 64874.

It is an arithmetic number, because the mean of its divisors is an integer number (12473424).

Almost surely, 2^74454189 is an apocalyptic number.

It is an amenable number.

74454189 is a deficient number, since it is larger than the sum of its proper divisors (25333203).

74454189 is a wasteful number, since it uses less digits than its factorization.

74454189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128787.

The product of its digits is 161280, while the sum is 42.

The square root of 74454189 is about 8628.6840827556. The cubic root of 74454189 is about 420.6908301963.

The spelling of 74454189 in words is "seventy-four million, four hundred fifty-four thousand, one hundred eighty-nine".