1158659412 has 48 divisors (see below), whose sum is σ = 2869255872. Its totient is φ = 362652160.

The previous prime is 1158659407. The next prime is 1158659413. The reversal of 1158659412 is 2149568511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158659413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83962 + ... + 96782.

It is an arithmetic number, because the mean of its divisors is an integer number (59776164).

Almost surely, 2^1158659412 is an apocalyptic number.

1158659412 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 1158659412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1434627936).

1158659412 is an abundant number, since it is smaller than the sum of its proper divisors (1710596460).

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

1158659412 is a wasteful number, since it uses less digits than its factorization.

1158659412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13288 (or 13286 counting only the distinct ones).

The product of its digits is 86400, while the sum is 42.

The square root of 1158659412 is about 34039.0865329844. The cubic root of 1158659412 is about 1050.3126542852.

Subtracting 1158659412 from its reverse (2149568511), we obtain a palindrome (990909099).

The spelling of 1158659412 in words is "one billion, one hundred fifty-eight million, six hundred fifty-nine thousand, four hundred twelve".