1131163408 has 40 divisors (see below), whose sum is σ = 2383287192. Its totient is φ = 517920768.

The previous prime is 1131163393. The next prime is 1131163417. The reversal of 1131163408 is 8043611311.

It can be written as a sum of positive squares in 4 ways, for example, as 874266624 + 256896784 = 29568^2 + 16028^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46135 + ... + 66262.

Almost surely, 2^1131163408 is an apocalyptic number.

It is an amenable number.

1131163408 is an abundant number, since it is smaller than the sum of its proper divisors (1252123784).

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

1131163408 is a wasteful number, since it uses less digits than its factorization.

1131163408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112459 (or 112453 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1131163408 is about 33632.7728265155. The cubic root of 1131163408 is about 1041.9377728173.

Adding to 1131163408 its reverse (8043611311), we get a palindrome (9174774719).

The spelling of 1131163408 in words is "one billion, one hundred thirty-one million, one hundred sixty-three thousand, four hundred eight".