1123730519 has 2 divisors, whose sum is σ = 1123730520. Its totient is φ = 1123730518.

The previous prime is 1123730479. The next prime is 1123730533. The reversal of 1123730519 is 9150373211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1123730519 - 2²⁴ = 1106953303 is a prime.

It is a super-2 number, since 2×1123730519² = 2525540558664018722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123730119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561865259 + 561865260.

It is an arithmetic number, because the mean of its divisors is an integer number (561865260).

Almost surely, 2^1123730519 is an apocalyptic number.

1123730519 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123730519 is an equidigital number, since it uses as much as digits as its factorization.

1123730519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 1123730519 is about 33522.0900153913. The cubic root of 1123730519 is about 1039.6505603012.

The spelling of 1123730519 in words is "one billion, one hundred twenty-three million, seven hundred thirty thousand, five hundred nineteen".