74158389 has 8 divisors (see below), whose sum is σ = 109864320. Its totient is φ = 49438908.

The previous prime is 74158361. The next prime is 74158421. The reversal of 74158389 is 98385147.

It is not a de Polignac number, because 74158389 - 2⁹ = 74157877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74158309) 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, 1373277 + ... + 1373330.

It is an arithmetic number, because the mean of its divisors is an integer number (13733040).

Almost surely, 2^74158389 is an apocalyptic number.

It is an amenable number.

74158389 is a deficient number, since it is larger than the sum of its proper divisors (35705931).

74158389 is a wasteful number, since it uses less digits than its factorization.

74158389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2746616 (or 2746610 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 74158389 is about 8611.5265197292. The cubic root of 74158389 is about 420.1329681032.

It can be divided in two parts, 74158 and 389, that added together give a palindrome (74547).

The spelling of 74158389 in words is "seventy-four million, one hundred fifty-eight thousand, three hundred eighty-nine".