74349543 has 4 divisors (see below), whose sum is σ = 99132728. Its totient is φ = 49566360.

The previous prime is 74349529. The next prime is 74349553. The reversal of 74349543 is 34594347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34594347 = 3 ⋅11531449.

It is not a de Polignac number, because 74349543 - 2¹⁷ = 74218471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74349553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12391588 + ... + 12391593.

It is an arithmetic number, because the mean of its divisors is an integer number (24783182).

Almost surely, 2^74349543 is an apocalyptic number.

74349543 is a deficient number, since it is larger than the sum of its proper divisors (24783185).

74349543 is a wasteful number, since it uses less digits than its factorization.

74349543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24783184.

The product of its digits is 181440, while the sum is 39.

The square root of 74349543 is about 8622.6181058887. The cubic root of 74349543 is about 420.4936429303.

The spelling of 74349543 in words is "seventy-four million, three hundred forty-nine thousand, five hundred forty-three".