1147335808 has 16 divisors (see below), whose sum is σ = 2285708310. Its totient is φ = 573667840.

The previous prime is 1147335803. The next prime is 1147335811. The reversal of 1147335808 is 8085337411.

It can be written as a sum of positive squares in only one way, i.e., 753392704 + 393943104 = 27448^2 + 19848^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1147335803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4481653 + ... + 4481908.

Almost surely, 2^1147335808 is an apocalyptic number.

It is an amenable number.

1147335808 is a deficient number, since it is larger than the sum of its proper divisors (1138372502).

1147335808 is an frugal number, since it uses more digits than its factorization.

1147335808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8963575 (or 8963563 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 1147335808 is about 33872.3457705545. The cubic root of 1147335808 is about 1046.8798707405.

The spelling of 1147335808 in words is "one billion, one hundred forty-seven million, three hundred thirty-five thousand, eight hundred eight".