74179609349 has 2 divisors, whose sum is σ = 74179609350. Its totient is φ = 74179609348.

The previous prime is 74179609331. The next prime is 74179609417. The reversal of 74179609349 is 94390697147.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68962436449 + 5217172900 = 262607^2 + 72230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74179609349 is a prime.

It is a super-2 number, since 2×74179609349² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74179609949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37089804674 + 37089804675.

It is an arithmetic number, because the mean of its divisors is an integer number (37089804675).

Almost surely, 2^74179609349 is an apocalyptic number.

It is an amenable number.

74179609349 is a deficient number, since it is larger than the sum of its proper divisors (1).

74179609349 is an equidigital number, since it uses as much as digits as its factorization.

74179609349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10287648, while the sum is 59.

The spelling of 74179609349 in words is "seventy-four billion, one hundred seventy-nine million, six hundred nine thousand, three hundred forty-nine".