8161822 has 4 divisors (see below), whose sum is σ = 12242736. Its totient is φ = 4080910.

The previous prime is 8161817. The next prime is 8161831. The reversal of 8161822 is 2281618.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2040454 + ... + 2040457.

It is an arithmetic number, because the mean of its divisors is an integer number (3060684).

Almost surely, 2^8161822 is an apocalyptic number.

8161822 is a deficient number, since it is larger than the sum of its proper divisors (4080914).

8161822 is a wasteful number, since it uses less digits than its factorization.

8161822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4080913.

The product of its digits is 1536, while the sum is 28.

The square root of 8161822 is about 2856.8902674062. The cubic root of 8161822 is about 201.3395250010.

The spelling of 8161822 in words is "eight million, one hundred sixty-one thousand, eight hundred twenty-two".