1158690816 has 144 divisors (see below), whose sum is σ = 3438981000. Its totient is φ = 375570432.

The previous prime is 1158690773. The next prime is 1158690839. The reversal of 1158690816 is 6180968511.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 681135 + ... + 682833.

Almost surely, 2^1158690816 is an apocalyptic number.

1158690816 is a gapful number since it is divisible by the number (16) 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 1158690816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1719490500).

1158690816 is an abundant number, since it is smaller than the sum of its proper divisors (2280290184).

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

1158690816 is a wasteful number, since it uses less digits than its factorization.

1158690816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764 (or 1741 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 1158690816 is about 34039.5478230837. The cubic root of 1158690816 is about 1050.3221433322.

The spelling of 1158690816 in words is "one billion, one hundred fifty-eight million, six hundred ninety thousand, eight hundred sixteen".