1131180797 has 2 divisors, whose sum is σ = 1131180798. Its totient is φ = 1131180796.

The previous prime is 1131180773. The next prime is 1131180803. The reversal of 1131180797 is 7970811311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 737991556 + 393189241 = 27166^2 + 19829^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131180797 - 2⁸ = 1131180541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1131180797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131180727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565590398 + 565590399.

It is an arithmetic number, because the mean of its divisors is an integer number (565590399).

Almost surely, 2^1131180797 is an apocalyptic number.

It is an amenable number.

1131180797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131180797 is an equidigital number, since it uses as much as digits as its factorization.

1131180797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 38.

The square root of 1131180797 is about 33633.0313382544. The cubic root of 1131180797 is about 1041.9431119113.

The spelling of 1131180797 in words is "one billion, one hundred thirty-one million, one hundred eighty thousand, seven hundred ninety-seven".