2604191603 has 4 divisors (see below), whose sum is σ = 2804514048. Its totient is φ = 2403869160.

The previous prime is 2604191599. The next prime is 2604191617. The reversal of 2604191603 is 3061914062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3061914062 = 2 ⋅1530957031.

It is a cyclic number.

It is not a de Polignac number, because 2604191603 - 2² = 2604191599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2604191603.

It is not an unprimeable number, because it can be changed into a prime (2604191693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100161203 + ... + 100161228.

It is an arithmetic number, because the mean of its divisors is an integer number (701128512).

Almost surely, 2^2604191603 is an apocalyptic number.

2604191603 is a deficient number, since it is larger than the sum of its proper divisors (200322445).

2604191603 is a wasteful number, since it uses less digits than its factorization.

2604191603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200322444.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 2604191603 is about 51031.2806325689. The cubic root of 2604191603 is about 1375.8074117165.

The spelling of 2604191603 in words is "two billion, six hundred four million, one hundred ninety-one thousand, six hundred three".