1115853216 has 24 divisors (see below), whose sum is σ = 2929114944. Its totient is φ = 371951040.

The previous prime is 1115853209. The next prime is 1115853229. The reversal of 1115853216 is 6123585111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5811640 + ... + 5811831.

It is an arithmetic number, because the mean of its divisors is an integer number (122046456).

Almost surely, 2^1115853216 is an apocalyptic number.

1115853216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1115853216 is an abundant number, since it is smaller than the sum of its proper divisors (1813261728).

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

1115853216 is a wasteful number, since it uses less digits than its factorization.

1115853216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11623484 (or 11623476 counting only the distinct ones).

The product of its digits is 7200, while the sum is 33.

The square root of 1115853216 is about 33404.3891726821. The cubic root of 1115853216 is about 1037.2155596310.

The spelling of 1115853216 in words is "one billion, one hundred fifteen million, eight hundred fifty-three thousand, two hundred sixteen".