81837341 has 4 divisors (see below), whose sum is σ = 81906684. Its totient is φ = 81768000.

The previous prime is 81837317. The next prime is 81837367. The reversal of 81837341 is 14373818.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14373818 = 2 ⋅7186909.

It can be written as a sum of positive squares in 2 ways, for example, as 206116 + 81631225 = 454^2 + 9035^2 .

It is a cyclic number.

It is not a de Polignac number, because 81837341 - 2⁶ = 81837277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81831341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32870 + ... + 35271.

It is an arithmetic number, because the mean of its divisors is an integer number (20476671).

Almost surely, 2^81837341 is an apocalyptic number.

It is an amenable number.

81837341 is a deficient number, since it is larger than the sum of its proper divisors (69343).

81837341 is a wasteful number, since it uses less digits than its factorization.

81837341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69342.

The product of its digits is 16128, while the sum is 35.

The square root of 81837341 is about 9046.3993389635. The cubic root of 81837341 is about 434.1606945972.

The spelling of 81837341 in words is "eighty-one million, eight hundred thirty-seven thousand, three hundred forty-one".