1126720537 has 2 divisors, whose sum is σ = 1126720538. Its totient is φ = 1126720536.

The previous prime is 1126720493. The next prime is 1126720547. The reversal of 1126720537 is 7350276211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 925619776 + 201100761 = 30424^2 + 14181^2 .

It is a cyclic number.

It is not a de Polignac number, because 1126720537 - 2⁷ = 1126720409 is a prime.

It is not a weakly prime, because it can be changed into another prime (1126720547) 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, 563360268 + 563360269.

It is an arithmetic number, because the mean of its divisors is an integer number (563360269).

Almost surely, 2^1126720537 is an apocalyptic number.

It is an amenable number.

1126720537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1126720537 is an equidigital number, since it uses as much as digits as its factorization.

1126720537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 1126720537 is about 33566.6581148615. The cubic root of 1126720537 is about 1040.5718431209.

Adding to 1126720537 its reverse (7350276211), we get a palindrome (8476996748).

The spelling of 1126720537 in words is "one billion, one hundred twenty-six million, seven hundred twenty thousand, five hundred thirty-seven".