1131769 has 2 divisors, whose sum is σ = 1131770. Its totient is φ = 1131768.

The previous prime is 1131763. The next prime is 1131787. The reversal of 1131769 is 9671311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1000000 + 131769 = 1000^2 + 363^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131769 - 2⁵ = 1131737 is a prime.

It is a super-2 number, since 2×1131769² = 2561802138722, which contains 22 as substring.

It is a Chen prime.

1131769 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1131763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565884 + 565885.

It is an arithmetic number, because the mean of its divisors is an integer number (565885).

2^1131769 is an apocalyptic number.

It is an amenable number.

1131769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131769 is an equidigital number, since it uses as much as digits as its factorization.

1131769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 28.

The square root of 1131769 is about 1063.8463234885. The cubic root of 1131769 is about 104.2123680708.

The spelling of 1131769 in words is "one million, one hundred thirty-one thousand, seven hundred sixty-nine".