2604161539 has 4 divisors (see below), whose sum is σ = 2976184624. Its totient is φ = 2232138456.

The previous prime is 2604161537. The next prime is 2604161551. The reversal of 2604161539 is 9351614062.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2604161539 - 2¹ = 2604161537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2604161498 and 2604161507.

It is not an unprimeable number, because it can be changed into a prime (2604161537) 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, 186011532 + ... + 186011545.

It is an arithmetic number, because the mean of its divisors is an integer number (744046156).

Almost surely, 2^2604161539 is an apocalyptic number.

2604161539 is a deficient number, since it is larger than the sum of its proper divisors (372023085).

2604161539 is an equidigital number, since it uses as much as digits as its factorization.

2604161539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372023084.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 2604161539 is about 51030.9860672905. The cubic root of 2604161539 is about 1375.8021173758.

The spelling of 2604161539 in words is "two billion, six hundred four million, one hundred sixty-one thousand, five hundred thirty-nine".