1123745745 has 8 divisors (see below), whose sum is σ = 1797993216. Its totient is φ = 599331056.

The previous prime is 1123745743. The next prime is 1123745767. The reversal of 1123745745 is 5475473211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1123745745 - 2¹ = 1123745743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1123745743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37458177 + ... + 37458206.

It is an arithmetic number, because the mean of its divisors is an integer number (224749152).

Almost surely, 2^1123745745 is an apocalyptic number.

1123745745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1123745745 is a deficient number, since it is larger than the sum of its proper divisors (674247471).

1123745745 is an equidigital number, since it uses as much as digits as its factorization.

1123745745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74916391.

The product of its digits is 117600, while the sum is 39.

The square root of 1123745745 is about 33522.3171186003. The cubic root of 1123745745 is about 1039.6552558659.

The spelling of 1123745745 in words is "one billion, one hundred twenty-three million, seven hundred forty-five thousand, seven hundred forty-five".