1131629 has 2 divisors, whose sum is σ = 1131630. Its totient is φ = 1131628.

The previous prime is 1131617. The next prime is 1131643. The reversal of 1131629 is 9261311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 946729 + 184900 = 973^2 + 430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131629 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565814 + 565815.

It is an arithmetic number, because the mean of its divisors is an integer number (565815).

2^1131629 is an apocalyptic number.

It is an amenable number.

1131629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131629 is an equidigital number, since it uses as much as digits as its factorization.

1131629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 23.

The square root of 1131629 is about 1063.7805224763. The cubic root of 1131629 is about 104.2080708649.

The spelling of 1131629 in words is "one million, one hundred thirty-one thousand, six hundred twenty-nine".