1069708891 has 2 divisors, whose sum is σ = 1069708892. Its totient is φ = 1069708890.

The previous prime is 1069708841. The next prime is 1069708903. The reversal of 1069708891 is 1988079601.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1069708891 - 2¹⁹ = 1069184603 is a prime.

It is a super-2 number, since 2×1069708891² = 2288554222968899762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1069708811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534854445 + 534854446.

It is an arithmetic number, because the mean of its divisors is an integer number (534854446).

Almost surely, 2^1069708891 is an apocalyptic number.

1069708891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1069708891 is an equidigital number, since it uses as much as digits as its factorization.

1069708891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 49.

The square root of 1069708891 is about 32706.4044339943. The cubic root of 1069708891 is about 1022.7163566771.

The spelling of 1069708891 in words is "one billion, sixty-nine million, seven hundred eight thousand, eight hundred ninety-one".