84934168181 has 2 divisors, whose sum is σ = 84934168182. Its totient is φ = 84934168180.

The previous prime is 84934168169. The next prime is 84934168213. The reversal of 84934168181 is 18186143948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84312413956 + 621754225 = 290366^2 + 24935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84934168181 is a prime.

It is a super-2 number, since 2×84934168181² (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 (84934168381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42467084090 + 42467084091.

It is an arithmetic number, because the mean of its divisors is an integer number (42467084091).

Almost surely, 2^84934168181 is an apocalyptic number.

It is an amenable number.

84934168181 is a deficient number, since it is larger than the sum of its proper divisors (1).

84934168181 is an equidigital number, since it uses as much as digits as its factorization.

84934168181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1327104, while the sum is 53.

The spelling of 84934168181 in words is "eighty-four billion, nine hundred thirty-four million, one hundred sixty-eight thousand, one hundred eighty-one".