18225670 has 16 divisors (see below), whose sum is σ = 32857488. Its totient is φ = 7278880.

The previous prime is 18225661. The next prime is 18225671. The reversal of 18225670 is 7652281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18225671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8772 + ... + 10648.

It is an arithmetic number, because the mean of its divisors is an integer number (2053593).

Almost surely, 2^18225670 is an apocalyptic number.

18225670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18225670 is a deficient number, since it is larger than the sum of its proper divisors (14631818).

18225670 is a wasteful number, since it uses less digits than its factorization.

18225670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 18225670 is about 4269.1533118407. The cubic root of 18225670 is about 263.1648212422.

It can be divided in two parts, 182 and 25670, that added together give a palindrome (25852).

The spelling of 18225670 in words is "eighteen million, two hundred twenty-five thousand, six hundred seventy".