1158317540 has 24 divisors (see below), whose sum is σ = 2433197760. Its totient is φ = 463187808.

The previous prime is 1158317533. The next prime is 1158317569. The reversal of 1158317540 is 457138511.

It is a self number, because there is not a number n which added to its sum of digits gives 1158317540.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83201 + ... + 96119.

It is an arithmetic number, because the mean of its divisors is an integer number (101383240).

Almost surely, 2^1158317540 is an apocalyptic number.

1158317540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1158317540 is an abundant number, since it is smaller than the sum of its proper divisors (1274880220).

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

1158317540 is a wasteful number, since it uses less digits than its factorization.

1158317540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17411 (or 17409 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 35.

The square root of 1158317540 is about 34034.0644061211. The cubic root of 1158317540 is about 1050.2093429913.

The spelling of 1158317540 in words is "one billion, one hundred fifty-eight million, three hundred seventeen thousand, five hundred forty".