1218204006 has 12 divisors (see below), whose sum is σ = 2436579012. Its totient is φ = 406039504.

The previous prime is 1218203999. The next prime is 1218204017. The reversal of 1218204006 is 6004028121.

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 in 5 ways as a sum of consecutive naturals, for example, 78370 + ... + 92618.

It is an arithmetic number, because the mean of its divisors is an integer number (203048251).

Almost surely, 2^1218204006 is an apocalyptic number.

1218204006 is an abundant number, since it is smaller than the sum of its proper divisors (1218375006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1218204006 is an frugal number, since it uses more digits than its factorization.

1218204006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28503 (or 14254 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1218204006 is about 34902.7793449175. The cubic root of 1218204006 is about 1068.0051357606.

Multiplying 1218204006 by its sum of digits (24), we get a square (29236896144 = 170988²).

The spelling of 1218204006 in words is "one billion, two hundred eighteen million, two hundred four thousand, six".