1158326136 has 128 divisors (see below), whose sum is σ = 3522182400. Its totient is φ = 349799040.

The previous prime is 1158326123. The next prime is 1158326177. The reversal of 1158326136 is 6316238511.

1158326136 is a `hidden beast` number, since 1 + 1 + 5 + 8 + 32 + 613 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1158326136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 885595 + ... + 886901.

It is an arithmetic number, because the mean of its divisors is an integer number (27517050).

Almost surely, 2^1158326136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1158326136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1761091200).

1158326136 is an abundant number, since it is smaller than the sum of its proper divisors (2363856264).

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

1158326136 is a wasteful number, since it uses less digits than its factorization.

1158326136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706 (or 1696 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 1158326136 is about 34034.1906911271. The cubic root of 1158326136 is about 1050.2119408906.

The spelling of 1158326136 in words is "one billion, one hundred fifty-eight million, three hundred twenty-six thousand, one hundred thirty-six".