74494159 has 4 divisors (see below), whose sum is σ = 74511520. Its totient is φ = 74476800.

The previous prime is 74494139. The next prime is 74494163. The reversal of 74494159 is 95149447.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 74494159 - 2⁷ = 74494031 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 (74494109) 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 3 ways as a sum of consecutive naturals, for example, 2959 + ... + 12559.

It is an arithmetic number, because the mean of its divisors is an integer number (18627880).

Almost surely, 2^74494159 is an apocalyptic number.

74494159 is a deficient number, since it is larger than the sum of its proper divisors (17361).

74494159 is an equidigital number, since it uses as much as digits as its factorization.

74494159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17360.

The product of its digits is 181440, while the sum is 43.

The square root of 74494159 is about 8630.9998841386. Note that the first 3 decimals coincide. The cubic root of 74494159 is about 420.7660979756.

The spelling of 74494159 in words is "seventy-four million, four hundred ninety-four thousand, one hundred fifty-nine".