18212246186 has 8 divisors (see below), whose sum is σ = 27321729024. Its totient is φ = 9105003180.

The previous prime is 18212246179. The next prime is 18212246189. The reversal of 18212246186 is 68164221281.

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

It is a super-2 number, since 2×18212246186² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 539480 + ... + 572243.

It is an arithmetic number, because the mean of its divisors is an integer number (3415216128).

Almost surely, 2^18212246186 is an apocalyptic number.

18212246186 is a deficient number, since it is larger than the sum of its proper divisors (9109482838).

18212246186 is a wasteful number, since it uses less digits than its factorization.

18212246186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119916.

The product of its digits is 73728, while the sum is 41.

The spelling of 18212246186 in words is "eighteen billion, two hundred twelve million, two hundred forty-six thousand, one hundred eighty-six".