1130542781 has 2 divisors, whose sum is σ = 1130542782. Its totient is φ = 1130542780.

The previous prime is 1130542771. The next prime is 1130542849. The reversal of 1130542781 is 1872450311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 857962681 + 272580100 = 29291^2 + 16510^2 .

It is a cyclic number.

It is not a de Polignac number, because 1130542781 - 2²² = 1126348477 is a prime.

It is a super-2 number, since 2×1130542781² = 2556253959342427922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1130542711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565271390 + 565271391.

It is an arithmetic number, because the mean of its divisors is an integer number (565271391).

Almost surely, 2^1130542781 is an apocalyptic number.

It is an amenable number.

1130542781 is a deficient number, since it is larger than the sum of its proper divisors (1).

1130542781 is an equidigital number, since it uses as much as digits as its factorization.

1130542781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 1130542781 is about 33623.5450391537. The cubic root of 1130542781 is about 1041.7471805443.

The spelling of 1130542781 in words is "one billion, one hundred thirty million, five hundred forty-two thousand, seven hundred eighty-one".