18212246185 has 8 divisors (see below), whose sum is σ = 24976794816. Its totient is φ = 12488397360.

The previous prime is 18212246179. The next prime is 18212246189. The reversal of 18212246185 is 58164221281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18212246185 - 2⁷ = 18212246057 is a prime.

It is a super-2 number, since 2×18212246185² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18212246189) 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, 260174911 + ... + 260174980.

It is an arithmetic number, because the mean of its divisors is an integer number (3122099352).

Almost surely, 2^18212246185 is an apocalyptic number.

It is an amenable number.

18212246185 is a deficient number, since it is larger than the sum of its proper divisors (6764548631).

18212246185 is an equidigital number, since it uses as much as digits as its factorization.

18212246185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520349903.

The product of its digits is 61440, while the sum is 40.

The spelling of 18212246185 in words is "eighteen billion, two hundred twelve million, two hundred forty-six thousand, one hundred eighty-five".