2604861493 has 8 divisors (see below), whose sum is σ = 2805811736. Its totient is φ = 2403993600.

The previous prime is 2604861463. The next prime is 2604861551. The reversal of 2604861493 is 3941684062.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1177381969 + 1427479524 = 34313^2 + 37782^2 .

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 2604861493 - 2⁹ = 2604860981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2604861463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55573 + ... + 91093.

It is an arithmetic number, because the mean of its divisors is an integer number (350726467).

Almost surely, 2^2604861493 is an apocalyptic number.

It is an amenable number.

2604861493 is a deficient number, since it is larger than the sum of its proper divisors (200950243).

2604861493 is a wasteful number, since it uses less digits than its factorization.

2604861493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41175.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 2604861493 is about 51037.8437338413. The cubic root of 2604861493 is about 1375.9253703454.

The spelling of 2604861493 in words is "two billion, six hundred four million, eight hundred sixty-one thousand, four hundred ninety-three".