81484803 has 12 divisors (see below), whose sum is σ = 118781520. Its totient is φ = 53824176.

The previous prime is 81484801. The next prime is 81484807. The reversal of 81484803 is 30848418.

It is not a de Polignac number, because 81484803 - 2¹ = 81484801 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (81484801) 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, 40551 + ... + 42512.

It is an arithmetic number, because the mean of its divisors is an integer number (9898460).

Almost surely, 2^81484803 is an apocalyptic number.

81484803 is a deficient number, since it is larger than the sum of its proper divisors (37296717).

81484803 is a wasteful number, since it uses less digits than its factorization.

81484803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83178 (or 83175 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 81484803 is about 9026.8933194095. The cubic root of 81484803 is about 433.5363730291.

The spelling of 81484803 in words is "eighty-one million, four hundred eighty-four thousand, eight hundred three".