81941484 has 12 divisors (see below), whose sum is σ = 191196824. Its totient is φ = 27313824.

The previous prime is 81941459. The next prime is 81941521. The reversal of 81941484 is 48414918.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3414217 + ... + 3414240.

Almost surely, 2^81941484 is an apocalyptic number.

It is an amenable number.

81941484 is an abundant number, since it is smaller than the sum of its proper divisors (109255340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81941484 is a wasteful number, since it uses less digits than its factorization.

81941484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6828464 (or 6828462 counting only the distinct ones).

The product of its digits is 36864, while the sum is 39.

The square root of 81941484 is about 9052.1535559225. The cubic root of 81941484 is about 434.3447818393.

The spelling of 81941484 in words is "eighty-one million, nine hundred forty-one thousand, four hundred eighty-four".