5194186841881 has 2 divisors, whose sum is σ = 5194186841882. Its totient is φ = 5194186841880.

The previous prime is 5194186841869. The next prime is 5194186841897. The reversal of 5194186841881 is 1881486814915.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4538216435481 + 655970406400 = 2130309^2 + 809920^2 .

It is a cyclic number.

It is not a de Polignac number, because 5194186841881 - 2⁵ = 5194186841849 is a prime.

It is a super-2 number, since 2×5194186841881² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5194186841821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2597093420940 + 2597093420941.

It is an arithmetic number, because the mean of its divisors is an integer number (2597093420941).

Almost surely, 2^{5194186841881} is an apocalyptic number.

It is an amenable number.

5194186841881 is a deficient number, since it is larger than the sum of its proper divisors (1).

5194186841881 is an equidigital number, since it uses as much as digits as its factorization.

5194186841881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17694720, while the sum is 64.

The spelling of 5194186841881 in words is "five trillion, one hundred ninety-four billion, one hundred eighty-six million, eight hundred forty-one thousand, eight hundred eighty-one".