18842822 has 4 divisors (see below), whose sum is σ = 28264236. Its totient is φ = 9421410.

The previous prime is 18842809. The next prime is 18842827. The reversal of 18842822 is 22824881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22824881 = 1489 ⋅15329.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18842827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4710704 + ... + 4710707.

It is an arithmetic number, because the mean of its divisors is an integer number (7066059).

Almost surely, 2^18842822 is an apocalyptic number.

18842822 is a deficient number, since it is larger than the sum of its proper divisors (9421414).

18842822 is an equidigital number, since it uses as much as digits as its factorization.

18842822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9421413.

The product of its digits is 16384, while the sum is 35.

The square root of 18842822 is about 4340.8319479104. The cubic root of 18842822 is about 266.1023123863.

The spelling of 18842822 in words is "eighteen million, eight hundred forty-two thousand, eight hundred twenty-two".