2604943123 has 4 divisors (see below), whose sum is σ = 2605061520. Its totient is φ = 2604824728.

The previous prime is 2604943097. The next prime is 2604943151. The reversal of 2604943123 is 3213494062.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3213494062 = 2 ⋅1606747031.

It is a cyclic number.

It is not a de Polignac number, because 2604943123 - 2¹³ = 2604934931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2604943723) 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, 15388 + ... + 73801.

It is an arithmetic number, because the mean of its divisors is an integer number (651265380).

Almost surely, 2^2604943123 is an apocalyptic number.

2604943123 is a deficient number, since it is larger than the sum of its proper divisors (118397).

2604943123 is an equidigital number, since it uses as much as digits as its factorization.

2604943123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118396.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 2604943123 is about 51038.6434282887. The cubic root of 2604943123 is about 1375.9397429093.

The spelling of 2604943123 in words is "two billion, six hundred four million, nine hundred forty-three thousand, one hundred twenty-three".