18422170 has 16 divisors (see below), whose sum is σ = 35710920. Its totient is φ = 6801984.

The previous prime is 18422147. The next prime is 18422171. The reversal of 18422170 is 7122481.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8743849 + 9678321 = 2957^2 + 3111^2 .

It is not an unprimeable number, because it can be changed into a prime (18422171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70725 + ... + 70984.

Almost surely, 2^18422170 is an apocalyptic number.

18422170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18422170 is a deficient number, since it is larger than the sum of its proper divisors (17288750).

18422170 is a wasteful number, since it uses less digits than its factorization.

18422170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141729.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 18422170 is about 4292.1055439027. The cubic root of 18422170 is about 264.1072127289.

The spelling of 18422170 in words is "eighteen million, four hundred twenty-two thousand, one hundred seventy".