1123693913 has 2 divisors, whose sum is σ = 1123693914. Its totient is φ = 1123693912.

The previous prime is 1123693889. The next prime is 1123693933. The reversal of 1123693913 is 3193963211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1042837849 + 80856064 = 32293^2 + 8992^2 .

It is an emirp because it is prime and its reverse (3193963211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123693913 - 2⁸ = 1123693657 is a prime.

It is a super-2 number, since 2×1123693913² = 2525376020226503138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1123693933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561846956 + 561846957.

It is an arithmetic number, because the mean of its divisors is an integer number (561846957).

Almost surely, 2^1123693913 is an apocalyptic number.

It is an amenable number.

1123693913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123693913 is an equidigital number, since it uses as much as digits as its factorization.

1123693913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26244, while the sum is 38.

The square root of 1123693913 is about 33521.5440127689. The cubic root of 1123693913 is about 1039.6392711588.

The spelling of 1123693913 in words is "one billion, one hundred twenty-three million, six hundred ninety-three thousand, nine hundred thirteen".