1158087618 has 40 divisors (see below), whose sum is σ = 2597257740. Its totient is φ = 385689600.

The previous prime is 1158087587. The next prime is 1158087659. The reversal of 1158087618 is 8167808511.

1158087618 is a `hidden beast` number, since 1 + 1 + 580 + 8 + 7 + 61 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1143318969 + 14768649 = 33813^2 + 3843^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 238818 + ... + 243618.

Almost surely, 2^1158087618 is an apocalyptic number.

1158087618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1158087618 is an abundant number, since it is smaller than the sum of its proper divisors (1439170122).

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

1158087618 is a wasteful number, since it uses less digits than its factorization.

1158087618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6304 (or 6295 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 45.

The square root of 1158087618 is about 34030.6864168209. The cubic root of 1158087618 is about 1050.1398507600.

The spelling of 1158087618 in words is "one billion, one hundred fifty-eight million, eighty-seven thousand, six hundred eighteen".