1026749069 has 2 divisors, whose sum is σ = 1026749070. Its totient is φ = 1026749068.

The previous prime is 1026749063. The next prime is 1026749077. The reversal of 1026749069 is 9609476201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 986274025 + 40475044 = 31405^2 + 6362^2 .

It is a cyclic number.

It is not a de Polignac number, because 1026749069 - 2²⁸ = 758313613 is a prime.

It is a super-2 number, since 2×1026749069² = 2108427301384733522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1026749063) 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, 513374534 + 513374535.

It is an arithmetic number, because the mean of its divisors is an integer number (513374535).

Almost surely, 2^1026749069 is an apocalyptic number.

It is an amenable number.

1026749069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1026749069 is an equidigital number, since it uses as much as digits as its factorization.

1026749069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 1026749069 is about 32042.9254126398. The cubic root of 1026749069 is about 1008.8380156979.

The spelling of 1026749069 in words is "one billion, twenty-six million, seven hundred forty-nine thousand, sixty-nine".