1218847007 has 16 divisors (see below), whose sum is σ = 1439442432. Its totient is φ = 1010219040.

The previous prime is 1218846971. The next prime is 1218847031. The reversal of 1218847007 is 7007488121.

It is a cyclic number.

It is not a de Polignac number, because 1218847007 - 2¹⁰ = 1218845983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218847907) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 27782 + ... + 56652.

It is an arithmetic number, because the mean of its divisors is an integer number (89965152).

Almost surely, 2^1218847007 is an apocalyptic number.

1218847007 is a deficient number, since it is larger than the sum of its proper divisors (220595425).

1218847007 is a wasteful number, since it uses less digits than its factorization.

1218847007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29078.

The product of its (nonzero) digits is 25088, while the sum is 38.

The square root of 1218847007 is about 34911.9894448884. The cubic root of 1218847007 is about 1068.1930100350.

It can be divided in two parts, 12188 and 47007, that added together give a palindrome (59195).

The spelling of 1218847007 in words is "one billion, two hundred eighteen million, eight hundred forty-seven thousand, seven".