1118285604 has 18 divisors (see below), whose sum is σ = 2826777590. Its totient is φ = 372761856.

The previous prime is 1118285593. The next prime is 1118285621. The reversal of 1118285604 is 4065828111.

1118285604 is a `hidden beast` number, since 1 + 11 + 82 + 8 + 560 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 976437504 + 141848100 = 31248^2 + 11910^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1118285604² = 2501125384227289632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 31063489 = 1118285604 / (1 + 1 + 1 + 8 + 2 + 8 + 5 + 6 + 0 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15531709 + ... + 15531780.

Almost surely, 2^1118285604 is an apocalyptic number.

It is an amenable number.

1118285604 is an abundant number, since it is smaller than the sum of its proper divisors (1708491986).

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

1118285604 is a wasteful number, since it uses less digits than its factorization.

1118285604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31063499 (or 31063494 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 1118285604 is about 33440.7775627302. Note that the first 3 decimals coincide. The cubic root of 1118285604 is about 1037.9686693518.

The spelling of 1118285604 in words is "one billion, one hundred eighteen million, two hundred eighty-five thousand, six hundred four".