1158115816 has 64 divisors (see below), whose sum is σ = 2685412800. Its totient is φ = 460339200.

The previous prime is 1158115801. The next prime is 1158115831. The reversal of 1158115816 is 6185118511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1158115801) and next prime (1158115831).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4905 + ... + 48376.

It is an arithmetic number, because the mean of its divisors is an integer number (41959575).

Almost surely, 2^1158115816 is an apocalyptic number.

It is an amenable number.

1158115816 is an abundant number, since it is smaller than the sum of its proper divisors (1527296984).

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

1158115816 is a wasteful number, since it uses less digits than its factorization.

1158115816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53330 (or 53326 counting only the distinct ones).

The product of its digits is 9600, while the sum is 37.

The square root of 1158115816 is about 34031.1007168443. The cubic root of 1158115816 is about 1050.1483738927.

The spelling of 1158115816 in words is "one billion, one hundred fifty-eight million, one hundred fifteen thousand, eight hundred sixteen".