81883016 has 16 divisors (see below), whose sum is σ = 162562140. Its totient is φ = 38533120.

The previous prime is 81883003. The next prime is 81883031. The reversal of 81883016 is 61038818.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 81830116 + 52900 = 9046^2 + 230^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 300905 + ... + 301176.

Almost surely, 2^81883016 is an apocalyptic number.

It is an amenable number.

81883016 is a deficient number, since it is larger than the sum of its proper divisors (80679124).

81883016 is a wasteful number, since it uses less digits than its factorization.

81883016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602104 (or 602100 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 81883016 is about 9048.9234718833. The cubic root of 81883016 is about 434.2414507304.

The spelling of 81883016 in words is "eighty-one million, eight hundred eighty-three thousand, sixteen".