74531893 has 8 divisors (see below), whose sum is σ = 79804440. Its totient is φ = 69358080.

The previous prime is 74531881. The next prime is 74531909. The reversal of 74531893 is 39813547.

It can be written as a sum of positive squares in 4 ways, for example, as 5276209 + 69255684 = 2297^2 + 8322^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74531893 - 2⁵ = 74531861 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 (74531993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23118 + ... + 26143.

It is an arithmetic number, because the mean of its divisors is an integer number (9975555).

Almost surely, 2^74531893 is an apocalyptic number.

It is an amenable number.

74531893 is a deficient number, since it is larger than the sum of its proper divisors (5272547).

74531893 is a wasteful number, since it uses less digits than its factorization.

74531893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49367.

The product of its digits is 90720, while the sum is 40.

The square root of 74531893 is about 8633.1855650160. The cubic root of 74531893 is about 420.8371304257.

The spelling of 74531893 in words is "seventy-four million, five hundred thirty-one thousand, eight hundred ninety-three".