1158136512 has 112 divisors (see below), whose sum is σ = 3380731872. Its totient is φ = 347627520.

The previous prime is 1158136493. The next prime is 1158136517. The reversal of 1158136512 is 2156318511.

It is a happy number.

It is a super-2 number, since 2×1158136512² = 2682560360855052288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1158136517) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 96678 + ... + 107994.

It is an arithmetic number, because the mean of its divisors is an integer number (30185106).

Almost surely, 2^1158136512 is an apocalyptic number.

1158136512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1158136512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1690365936).

1158136512 is an abundant number, since it is smaller than the sum of its proper divisors (2222595360).

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

1158136512 is a wasteful number, since it uses less digits than its factorization.

1158136512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11386 (or 11376 counting only the distinct ones).

The product of its digits is 7200, while the sum is 33.

The square root of 1158136512 is about 34031.4047902816. The cubic root of 1158136512 is about 1050.1546293814.

The spelling of 1158136512 in words is "one billion, one hundred fifty-eight million, one hundred thirty-six thousand, five hundred twelve".