1006861169 has 2 divisors, whose sum is σ = 1006861170. Its totient is φ = 1006861168.

The previous prime is 1006861157. The next prime is 1006861171. The reversal of 1006861169 is 9611686001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 959760400 + 47100769 = 30980^2 + 6863^2 .

It is a cyclic number.

It is not a de Polignac number, because 1006861169 - 2⁸ = 1006860913 is a prime.

It is a super-2 number, since 2×1006861169² = 2027538827280093122, which contains 22 as substring.

Together with 1006861171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1006861109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503430584 + 503430585.

It is an arithmetic number, because the mean of its divisors is an integer number (503430585).

Almost surely, 2^1006861169 is an apocalyptic number.

It is an amenable number.

1006861169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006861169 is an equidigital number, since it uses as much as digits as its factorization.

1006861169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 1006861169 is about 31731.0757617828. The cubic root of 1006861169 is about 1002.2818455538.

The spelling of 1006861169 in words is "one billion, six million, eight hundred sixty-one thousand, one hundred sixty-nine".