1123857193 has 4 divisors (see below), whose sum is σ = 1142905680. Its totient is φ = 1104808708.

The previous prime is 1123857157. The next prime is 1123857197. The reversal of 1123857193 is 3917583211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123857193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123857197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9524155 + ... + 9524272.

It is an arithmetic number, because the mean of its divisors is an integer number (285726420).

Almost surely, 2^1123857193 is an apocalyptic number.

It is an amenable number.

1123857193 is a deficient number, since it is larger than the sum of its proper divisors (19048487).

1123857193 is an equidigital number, since it uses as much as digits as its factorization.

1123857193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19048486.

The product of its digits is 45360, while the sum is 40.

The square root of 1123857193 is about 33523.9793729802. The cubic root of 1123857193 is about 1039.6896241588.

The spelling of 1123857193 in words is "one billion, one hundred twenty-three million, eight hundred fifty-seven thousand, one hundred ninety-three".