1118212285 has 16 divisors (see below), whose sum is σ = 1372924080. Its totient is φ = 873999360.

The previous prime is 1118212283. The next prime is 1118212307. The reversal of 1118212285 is 5822128111.

It can be written as a sum of positive squares in 8 ways, for example, as 35736484 + 1082475801 = 5978^2 + 32901^2 .

It is not a de Polignac number, because 1118212285 - 2¹ = 1118212283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118212283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55111 + ... + 72619.

It is an arithmetic number, because the mean of its divisors is an integer number (85807755).

Almost surely, 2^1118212285 is an apocalyptic number.

It is an amenable number.

1118212285 is a deficient number, since it is larger than the sum of its proper divisors (254711795).

1118212285 is a wasteful number, since it uses less digits than its factorization.

1118212285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17808.

The product of its digits is 2560, while the sum is 31.

The square root of 1118212285 is about 33439.6812933377. The cubic root of 1118212285 is about 1037.9459844826.

The spelling of 1118212285 in words is "one billion, one hundred eighteen million, two hundred twelve thousand, two hundred eighty-five".