1118218465 has 48 divisors (see below), whose sum is σ = 1696962960. Its totient is φ = 701084160.

The previous prime is 1118218463. The next prime is 1118218481. The reversal of 1118218465 is 5648128111.

1118218465 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 519841 + 1117698624 = 721^2 + 33432^2 .

It is not a de Polignac number, because 1118218465 - 2¹ = 1118218463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1118218463) 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 47 ways as a sum of consecutive naturals, for example, 345555 + ... + 348775.

It is an arithmetic number, because the mean of its divisors is an integer number (35353395).

Almost surely, 2^1118218465 is an apocalyptic number.

It is an amenable number.

1118218465 is a deficient number, since it is larger than the sum of its proper divisors (578744495).

1118218465 is a wasteful number, since it uses less digits than its factorization.

1118218465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3362 (or 3355 counting only the distinct ones).

The product of its digits is 15360, while the sum is 37.

The square root of 1118218465 is about 33439.7736983969. The cubic root of 1118218465 is about 1037.9478966104.

The spelling of 1118218465 in words is "one billion, one hundred eighteen million, two hundred eighteen thousand, four hundred sixty-five".