81492883 has 8 divisors (see below), whose sum is σ = 86365440. Its totient is φ = 76629120.

The previous prime is 81492863. The next prime is 81492911. The reversal of 81492883 is 38829418.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81492883 - 2²¹ = 79395731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81492823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35278 + ... + 37516.

It is an arithmetic number, because the mean of its divisors is an integer number (10795680).

Almost surely, 2^81492883 is an apocalyptic number.

81492883 is a deficient number, since it is larger than the sum of its proper divisors (4872557).

81492883 is a wasteful number, since it uses less digits than its factorization.

81492883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4397.

The product of its digits is 110592, while the sum is 43.

The square root of 81492883 is about 9027.3408598546. The cubic root of 81492883 is about 433.5507023191.

The spelling of 81492883 in words is "eighty-one million, four hundred ninety-two thousand, eight hundred eighty-three".