168732438349 has 2 divisors, whose sum is σ = 168732438350. Its totient is φ = 168732438348.

The previous prime is 168732438323. The next prime is 168732438353. The reversal of 168732438349 is 943834237861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133597560100 + 35134878249 = 365510^2 + 187443^2 .

It is a cyclic number.

It is not a de Polignac number, because 168732438349 - 2¹³ = 168732430157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168732438293 and 168732438302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168732438649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84366219174 + 84366219175.

It is an arithmetic number, because the mean of its divisors is an integer number (84366219175).

Almost surely, 2^168732438349 is an apocalyptic number.

It is an amenable number.

168732438349 is a deficient number, since it is larger than the sum of its proper divisors (1).

168732438349 is an equidigital number, since it uses as much as digits as its factorization.

168732438349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20901888, while the sum is 58.

The spelling of 168732438349 in words is "one hundred sixty-eight billion, seven hundred thirty-two million, four hundred thirty-eight thousand, three hundred forty-nine".