8136481 has 4 divisors (see below), whose sum is σ = 8143552. Its totient is φ = 8129412.

The previous prime is 8136467. The next prime is 8136487. The reversal of 8136481 is 1846318.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8136481 - 2¹⁹ = 7612193 is a prime.

It is a super-2 number, since 2×8136481² = 132404646126722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8136487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1365 + ... + 4258.

It is an arithmetic number, because the mean of its divisors is an integer number (2035888).

Almost surely, 2^8136481 is an apocalyptic number.

It is an amenable number.

8136481 is a deficient number, since it is larger than the sum of its proper divisors (7071).

8136481 is a wasteful number, since it uses less digits than its factorization.

8136481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7070.

The product of its digits is 4608, while the sum is 31.

The square root of 8136481 is about 2852.4517524403. The cubic root of 8136481 is about 201.1309345479.

It can be divided in two parts, 81 and 36481, that multiplied together give a square (2954961 = 1719²).

The spelling of 8136481 in words is "eight million, one hundred thirty-six thousand, four hundred eighty-one".