74342189 has 2 divisors, whose sum is σ = 74342190. Its totient is φ = 74342188.

The previous prime is 74342129. The next prime is 74342291. The reversal of 74342189 is 98124347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37920964 + 36421225 = 6158^2 + 6035^2 .

It is a cyclic number.

It is not a de Polignac number, because 74342189 - 2²⁴ = 57564973 is a prime.

It is a super-2 number, since 2×74342189² = 11053522130623442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74342129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37171094 + 37171095.

It is an arithmetic number, because the mean of its divisors is an integer number (37171095).

Almost surely, 2^74342189 is an apocalyptic number.

It is an amenable number.

74342189 is a deficient number, since it is larger than the sum of its proper divisors (1).

74342189 is an equidigital number, since it uses as much as digits as its factorization.

74342189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 74342189 is about 8622.1916587374. The cubic root of 74342189 is about 420.4797786343.

The spelling of 74342189 in words is "seventy-four million, three hundred forty-two thousand, one hundred eighty-nine".