81418341 has 8 divisors (see below), whose sum is σ = 112301280. Its totient is φ = 52407152.

The previous prime is 81418339. The next prime is 81418343. The reversal of 81418341 is 14381418.

It is an interprime number because it is at equal distance from previous prime (81418339) and next prime (81418343).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81418341 - 2¹ = 81418339 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 = 81418299 and 81418308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81418343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467835 + ... + 468008.

It is an arithmetic number, because the mean of its divisors is an integer number (14037660).

Almost surely, 2^81418341 is an apocalyptic number.

It is an amenable number.

81418341 is a deficient number, since it is larger than the sum of its proper divisors (30882939).

81418341 is a wasteful number, since it uses less digits than its factorization.

81418341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935875.

The product of its digits is 3072, while the sum is 30.

The square root of 81418341 is about 9023.2112354749. The cubic root of 81418341 is about 433.4184715687.

Adding to 81418341 its reverse (14381418), we get a palindrome (95799759).

The spelling of 81418341 in words is "eighty-one million, four hundred eighteen thousand, three hundred forty-one".