81876341 has 2 divisors, whose sum is σ = 81876342. Its totient is φ = 81876340.

The previous prime is 81876323. The next prime is 81876359. The reversal of 81876341 is 14367818.

It is a balanced prime because it is at equal distance from previous prime (81876323) and next prime (81876359).

It can be written as a sum of positive squares in only one way, i.e., 81830116 + 46225 = 9046^2 + 215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81876341 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 81876295 and 81876304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (81876391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40938170 + 40938171.

It is an arithmetic number, because the mean of its divisors is an integer number (40938171).

Almost surely, 2^81876341 is an apocalyptic number.

It is an amenable number.

81876341 is a deficient number, since it is larger than the sum of its proper divisors (1).

81876341 is an equidigital number, since it uses as much as digits as its factorization.

81876341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 38.

The square root of 81876341 is about 9048.5546359626. The cubic root of 81876341 is about 434.2296508050.

The spelling of 81876341 in words is "eighty-one million, eight hundred seventy-six thousand, three hundred forty-one".