1218668054 has 4 divisors (see below), whose sum is σ = 1828002084. Its totient is φ = 609334026.

The previous prime is 1218668039. The next prime is 1218668071. The reversal of 1218668054 is 4508668121.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 304667012 + ... + 304667015.

It is an arithmetic number, because the mean of its divisors is an integer number (457000521).

Almost surely, 2^1218668054 is an apocalyptic number.

1218668054 is a deficient number, since it is larger than the sum of its proper divisors (609334030).

1218668054 is an equidigital number, since it uses as much as digits as its factorization.

1218668054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609334029.

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 1218668054 is about 34909.4264347039. The cubic root of 1218668054 is about 1068.1407295605.

The spelling of 1218668054 in words is "one billion, two hundred eighteen million, six hundred sixty-eight thousand, fifty-four".