81883846 has 24 divisors (see below), whose sum is σ = 135471672. Its totient is φ = 37092000.

The previous prime is 81883843. The next prime is 81883859. The reversal of 81883846 is 64838818.

It is a junction number, because it is equal to n+sod(n) for n = 81883796 and 81883805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81883843) 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 11 ways as a sum of consecutive naturals, for example, 135946 + ... + 136546.

It is an arithmetic number, because the mean of its divisors is an integer number (5644653).

Almost surely, 2^81883846 is an apocalyptic number.

81883846 is a deficient number, since it is larger than the sum of its proper divisors (53587826).

81883846 is a wasteful number, since it uses less digits than its factorization.

81883846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188 (or 1177 counting only the distinct ones).

The product of its digits is 294912, while the sum is 46.

The square root of 81883846 is about 9048.9693335761. The cubic root of 81883846 is about 434.2429179422.

The spelling of 81883846 in words is "eighty-one million, eight hundred eighty-three thousand, eight hundred forty-six".