1218252226 has 8 divisors (see below), whose sum is σ = 1827938880. Its totient is φ = 608939268.

The previous prime is 1218252187. The next prime is 1218252281. The reversal of 1218252226 is 6222528121.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85126 + ... + 98401.

It is an arithmetic number, because the mean of its divisors is an integer number (228492360).

Almost surely, 2^1218252226 is an apocalyptic number.

1218252226 is a deficient number, since it is larger than the sum of its proper divisors (609686654).

1218252226 is a wasteful number, since it uses less digits than its factorization.

1218252226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186848.

The product of its digits is 7680, while the sum is 31.

The square root of 1218252226 is about 34903.4701140159. The cubic root of 1218252226 is about 1068.0192271410.

The spelling of 1218252226 in words is "one billion, two hundred eighteen million, two hundred fifty-two thousand, two hundred twenty-six".