74838361181 has 2 divisors, whose sum is σ = 74838361182. Its totient is φ = 74838361180.

The previous prime is 74838361177. The next prime is 74838361189. The reversal of 74838361181 is 18116383847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66198658681 + 8639702500 = 257291^2 + 92950^2 .

It is an emirp because it is prime and its reverse (18116383847) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74838361181 - 2² = 74838361177 is a prime.

It is a super-2 number, since 2×74838361181² (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 (74838361189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37419180590 + 37419180591.

It is an arithmetic number, because the mean of its divisors is an integer number (37419180591).

Almost surely, 2^74838361181 is an apocalyptic number.

It is an amenable number.

74838361181 is a deficient number, since it is larger than the sum of its proper divisors (1).

74838361181 is an equidigital number, since it uses as much as digits as its factorization.

74838361181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 50.

The spelling of 74838361181 in words is "seventy-four billion, eight hundred thirty-eight million, three hundred sixty-one thousand, one hundred eighty-one".