1118085642 has 24 divisors (see below), whose sum is σ = 2423942820. Its totient is φ = 372476160.

The previous prime is 1118085629. The next prime is 1118085667. The reversal of 1118085642 is 2465808111.

1118085642 is a `hidden beast` number, since 1 + 1 + 1 + 8 + 0 + 8 + 5 + 642 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1009904841 + 108180801 = 31779^2 + 10401^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1118085597 and 1118085606.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14842 + ... + 49562.

Almost surely, 2^1118085642 is an apocalyptic number.

1118085642 is an abundant number, since it is smaller than the sum of its proper divisors (1305857178).

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

1118085642 is a wasteful number, since it uses less digits than its factorization.

1118085642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36518 (or 36515 counting only the distinct ones).

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

The square root of 1118085642 is about 33437.7876361460. The cubic root of 1118085642 is about 1037.9067988533.

The spelling of 1118085642 in words is "one billion, one hundred eighteen million, eighty-five thousand, six hundred forty-two".