1158245440 has 112 divisors (see below), whose sum is σ = 3073261824. Its totient is φ = 412160000.

The previous prime is 1158245423. The next prime is 1158245441. The reversal of 1158245440 is 445428511.

It is a junction number, because it is equal to n+sod(n) for n = 1158245396 and 1158245405.

It is not an unprimeable number, because it can be changed into a prime (1158245441) 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, 161940 + ... + 168940.

Almost surely, 2^1158245440 is an apocalyptic number.

1158245440 is a gapful number since it is divisible by the number (10) 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 1158245440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1536630912).

1158245440 is an abundant number, since it is smaller than the sum of its proper divisors (1915016384).

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

1158245440 is a wasteful number, since it uses less digits than its factorization.

1158245440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7076 (or 7066 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 34.

The square root of 1158245440 is about 34033.0051567592. The cubic root of 1158245440 is about 1050.1875522871.

The spelling of 1158245440 in words is "one billion, one hundred fifty-eight million, two hundred forty-five thousand, four hundred forty".