81167848 has 16 divisors (see below), whose sum is σ = 160200000. Its totient is φ = 38447856.

The previous prime is 81167833. The next prime is 81167873. The reversal of 81167848 is 84876118.

It is a super-2 number, since 2×81167848² = 13176439097902208, which contains 22 as substring.

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, 266848 + ... + 267151.

It is an arithmetic number, because the mean of its divisors is an integer number (10012500).

Almost surely, 2^81167848 is an apocalyptic number.

It is an amenable number.

81167848 is a deficient number, since it is larger than the sum of its proper divisors (79032152).

81167848 is a wasteful number, since it uses less digits than its factorization.

81167848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534024 (or 534020 counting only the distinct ones).

The product of its digits is 86016, while the sum is 43.

The square root of 81167848 is about 9009.3200631346. The cubic root of 81167848 is about 432.9735274953.

The spelling of 81167848 in words is "eighty-one million, one hundred sixty-seven thousand, eight hundred forty-eight".