74199491594 has 4 divisors (see below), whose sum is σ = 111299237394. Its totient is φ = 37099745796.

The previous prime is 74199491593. The next prime is 74199491599. The reversal of 74199491594 is 49519499147.

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., 73108048225 + 1091443369 = 270385^2 + 33037^2 .

It is not an unprimeable number, because it can be changed into a prime (74199491593) 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 as a sum of consecutive naturals, namely, 18549872897 + ... + 18549872900.

Almost surely, 2^74199491594 is an apocalyptic number.

74199491594 is a deficient number, since it is larger than the sum of its proper divisors (37099745800).

74199491594 is a wasteful number, since it uses less digits than its factorization.

74199491594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37099745799.

The product of its digits is 14696640, while the sum is 62.

The spelling of 74199491594 in words is "seventy-four billion, one hundred ninety-nine million, four hundred ninety-one thousand, five hundred ninety-four".