1131668533 has 2 divisors, whose sum is σ = 1131668534. Its totient is φ = 1131668532.

The previous prime is 1131668513. The next prime is 1131668599. The reversal of 1131668533 is 3358661311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 937400689 + 194267844 = 30617^2 + 13938^2 .

It is an emirp because it is prime and its reverse (3358661311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1131668533 - 2²¹ = 1129571381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131668492 and 1131668501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131668513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565834266 + 565834267.

It is an arithmetic number, because the mean of its divisors is an integer number (565834267).

Almost surely, 2^1131668533 is an apocalyptic number.

It is an amenable number.

1131668533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131668533 is an equidigital number, since it uses as much as digits as its factorization.

1131668533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 1131668533 is about 33640.2814048872. The cubic root of 1131668533 is about 1042.0928433967.

The spelling of 1131668533 in words is "one billion, one hundred thirty-one million, six hundred sixty-eight thousand, five hundred thirty-three".