8165438 has 4 divisors (see below), whose sum is σ = 12248160. Its totient is φ = 4082718.

The previous prime is 8165429. The next prime is 8165447. The reversal of 8165438 is 8345618.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (8165429) and next prime (8165447).

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 8165398 and 8165407.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 2041358 + ... + 2041361.

It is an arithmetic number, because the mean of its divisors is an integer number (3062040).

Almost surely, 2^8165438 is an apocalyptic number.

8165438 is a deficient number, since it is larger than the sum of its proper divisors (4082722).

8165438 is a wasteful number, since it uses less digits than its factorization.

8165438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4082721.

The product of its digits is 23040, while the sum is 35.

The square root of 8165438 is about 2857.5230532753. The cubic root of 8165438 is about 201.3692543201.

The spelling of 8165438 in words is "eight million, one hundred sixty-five thousand, four hundred thirty-eight".