18471122 has 4 divisors (see below), whose sum is σ = 27706686. Its totient is φ = 9235560.

The previous prime is 18471119. The next prime is 18471137. The reversal of 18471122 is 22117481.

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

It can be written as a sum of positive squares in only one way, i.e., 10182481 + 8288641 = 3191^2 + 2879^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18471091 and 18471100.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4617779 + ... + 4617782.

Almost surely, 2^18471122 is an apocalyptic number.

18471122 is a deficient number, since it is larger than the sum of its proper divisors (9235564).

18471122 is an equidigital number, since it uses as much as digits as its factorization.

18471122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9235563.

The product of its digits is 896, while the sum is 26.

The square root of 18471122 is about 4297.8043231399. The cubic root of 18471122 is about 264.3409373072.

The spelling of 18471122 in words is "eighteen million, four hundred seventy-one thousand, one hundred twenty-two".