1022747729 has 2 divisors, whose sum is σ = 1022747730. Its totient is φ = 1022747728.

The previous prime is 1022747717. The next prime is 1022747741. The reversal of 1022747729 is 9277472201.

It is a balanced prime because it is at equal distance from previous prime (1022747717) and next prime (1022747741).

It can be written as a sum of positive squares in only one way, i.e., 1006158400 + 16589329 = 31720^2 + 4073^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022747729 - 2¹² = 1022743633 is a prime.

It is not a weakly prime, because it can be changed into another prime (1022747749) 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, 511373864 + 511373865.

It is an arithmetic number, because the mean of its divisors is an integer number (511373865).

Almost surely, 2^1022747729 is an apocalyptic number.

It is an amenable number.

1022747729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022747729 is an equidigital number, since it uses as much as digits as its factorization.

1022747729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98784, while the sum is 41.

The square root of 1022747729 is about 31980.4272798223. The cubic root of 1022747729 is about 1007.5257966373.

The spelling of 1022747729 in words is "one billion, twenty-two million, seven hundred forty-seven thousand, seven hundred twenty-nine".