1220264018 has 16 divisors (see below), whose sum is σ = 1927800000. Its totient is φ = 577699632.

The previous prime is 1220263987. The next prime is 1220264051. The reversal of 1220264018 is 8104620221.

It is a happy number.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 69608 + ... + 85356.

It is an arithmetic number, because the mean of its divisors is an integer number (120487500).

Almost surely, 2^1220264018 is an apocalyptic number.

1220264018 is a deficient number, since it is larger than the sum of its proper divisors (707535982).

1220264018 is a wasteful number, since it uses less digits than its factorization.

1220264018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17809.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 1220264018 is about 34932.2775953702. The cubic root of 1220264018 is about 1068.6068041200.

Adding to 1220264018 its reverse (8104620221), we get a palindrome (9324884239).

The spelling of 1220264018 in words is "one billion, two hundred twenty million, two hundred sixty-four thousand, eighteen".