1158449436 has 18 divisors (see below), whose sum is σ = 2928302832. Its totient is φ = 386149800.

The previous prime is 1158449407. The next prime is 1158449449. The reversal of 1158449436 is 6349448511.

1158449436 is a `hidden beast` number, since 1 + 158 + 4 + 494 + 3 + 6 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1158449391 and 1158449400.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 16089540 + ... + 16089611.

Almost surely, 2^1158449436 is an apocalyptic number.

It is an amenable number.

1158449436 is an abundant number, since it is smaller than the sum of its proper divisors (1769853396).

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

1158449436 is a wasteful number, since it uses less digits than its factorization.

1158449436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32179161 (or 32179156 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 1158449436 is about 34036.0020566458. The cubic root of 1158449436 is about 1050.2492034353.

The spelling of 1158449436 in words is "one billion, one hundred fifty-eight million, four hundred forty-nine thousand, four hundred thirty-six".