74197522394 has 8 divisors (see below), whose sum is σ = 111460681908. Its totient is φ = 37043961760.

The previous prime is 74197522387. The next prime is 74197522463. The reversal of 74197522394 is 49322579147.

It can be written as a sum of positive squares in 2 ways, for example, as 63573066769 + 10624455625 = 252137^2 + 103075^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27398027 + ... + 27400734.

Almost surely, 2^74197522394 is an apocalyptic number.

74197522394 is a deficient number, since it is larger than the sum of its proper divisors (37263159514).

74197522394 is a wasteful number, since it uses less digits than its factorization.

74197522394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54799440.

The product of its digits is 3810240, while the sum is 53.

The spelling of 74197522394 in words is "seventy-four billion, one hundred ninety-seven million, five hundred twenty-two thousand, three hundred ninety-four".