1129819 has 2 divisors, whose sum is σ = 1129820. Its totient is φ = 1129818.

The previous prime is 1129789. The next prime is 1129831. The reversal of 1129819 is 9189211.

It is a strong prime.

It is an emirp because it is prime and its reverse (9189211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1129819 - 2⁵ = 1129787 is a prime.

It is a super-2 number, since 2×1129819² = 2552981945522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1129859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564909 + 564910.

It is an arithmetic number, because the mean of its divisors is an integer number (564910).

2^1129819 is an apocalyptic number.

1129819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129819 is an equidigital number, since it uses as much as digits as its factorization.

1129819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 31.

The square root of 1129819 is about 1062.9294426254. The cubic root of 1129819 is about 104.1524821930.

The spelling of 1129819 in words is "one million, one hundred twenty-nine thousand, eight hundred nineteen".