81483188 has 12 divisors (see below), whose sum is σ = 142658880. Its totient is φ = 40723512.

The previous prime is 81483167. The next prime is 81483203. The reversal of 81483188 is 88138418.

It is a congruent number.

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, 14645 + ... + 19427.

It is an arithmetic number, because the mean of its divisors is an integer number (11888240).

Almost surely, 2^81483188 is an apocalyptic number.

It is an amenable number.

81483188 is a deficient number, since it is larger than the sum of its proper divisors (61175692).

81483188 is a wasteful number, since it uses less digits than its factorization.

81483188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9046 (or 9044 counting only the distinct ones).

The product of its digits is 49152, while the sum is 41.

The square root of 81483188 is about 9026.8038640484. The cubic root of 81483188 is about 433.5335088309.

The spelling of 81483188 in words is "eighty-one million, four hundred eighty-three thousand, one hundred eighty-eight".