74494138 has 4 divisors (see below), whose sum is σ = 111741210. Its totient is φ = 37247068.

The previous prime is 74494129. The next prime is 74494139. The reversal of 74494138 is 83149447.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 65173329 + 9320809 = 8073^2 + 3053^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 74494138.

It is not an unprimeable number, because it can be changed into a prime (74494139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18623533 + ... + 18623536.

Almost surely, 2^74494138 is an apocalyptic number.

74494138 is a deficient number, since it is larger than the sum of its proper divisors (37247072).

74494138 is a wasteful number, since it uses less digits than its factorization.

74494138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37247071.

The product of its digits is 96768, while the sum is 40.

The square root of 74494138 is about 8630.9986675935. The cubic root of 74494138 is about 420.7660584374.

The spelling of 74494138 in words is "seventy-four million, four hundred ninety-four thousand, one hundred thirty-eight".