1123000819 has 2 divisors, whose sum is σ = 1123000820. Its totient is φ = 1123000818.

The previous prime is 1123000817. The next prime is 1123000831. The reversal of 1123000819 is 9180003211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123000819 - 2¹ = 1123000817 is a prime.

It is a super-2 number, since 2×1123000819² = 2522261678949341522, which contains 22 as substring.

Together with 1123000817, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1123000793 and 1123000802.

It is not a weakly prime, because it can be changed into another prime (1123000817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561500409 + 561500410.

It is an arithmetic number, because the mean of its divisors is an integer number (561500410).

Almost surely, 2^1123000819 is an apocalyptic number.

1123000819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123000819 is an equidigital number, since it uses as much as digits as its factorization.

1123000819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1123000819 is about 33511.2043800279. The cubic root of 1123000819 is about 1039.4254774877.

The spelling of 1123000819 in words is "one billion, one hundred twenty-three million, eight hundred nineteen", and thus it is an aban number.