18106822 has 4 divisors (see below), whose sum is σ = 27160236. Its totient is φ = 9053410.

The previous prime is 18106787. The next prime is 18106831. The reversal of 18106822 is 22860181.

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, 4526704 + ... + 4526707.

It is an arithmetic number, because the mean of its divisors is an integer number (6790059).

Almost surely, 2^18106822 is an apocalyptic number.

18106822 is a deficient number, since it is larger than the sum of its proper divisors (9053414).

18106822 is an equidigital number, since it uses as much as digits as its factorization.

18106822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9053413.

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

The square root of 18106822 is about 4255.2111580978. The cubic root of 18106822 is about 262.5915484159.

The spelling of 18106822 in words is "eighteen million, one hundred six thousand, eight hundred twenty-two".