74457189 has 12 divisors (see below), whose sum is σ = 110172972. Its totient is φ = 48427200.

The previous prime is 74457139. The next prime is 74457193. The reversal of 74457189 is 98175447.

It is a happy number.

74457189 is a `hidden beast` number, since 74 + 4 + 571 + 8 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4601025 + 69856164 = 2145^2 + 8358^2 .

It is not a de Polignac number, because 74457189 - 2⁹ = 74456677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74457109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100522 + ... + 101259.

It is an arithmetic number, because the mean of its divisors is an integer number (9181081).

Almost surely, 2^74457189 is an apocalyptic number.

It is an amenable number.

74457189 is a deficient number, since it is larger than the sum of its proper divisors (35715783).

74457189 is a wasteful number, since it uses less digits than its factorization.

74457189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201828 (or 201825 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 74457189 is about 8628.8579197945. The cubic root of 74457189 is about 420.6964804517.

The spelling of 74457189 in words is "seventy-four million, four hundred fifty-seven thousand, one hundred eighty-nine".