2618870321 has 4 divisors (see below), whose sum is σ = 2732734272. Its totient is φ = 2505006372.

The previous prime is 2618870279. The next prime is 2618870327. The reversal of 2618870321 is 1230788162.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2618870321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2618870327) 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 3 ways as a sum of consecutive naturals, for example, 56931941 + ... + 56931986.

It is an arithmetic number, because the mean of its divisors is an integer number (683183568).

Almost surely, 2^2618870321 is an apocalyptic number.

It is an amenable number.

2618870321 is a deficient number, since it is larger than the sum of its proper divisors (113863951).

2618870321 is a wasteful number, since it uses less digits than its factorization.

2618870321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113863950.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 2618870321 is about 51174.8993257437. The cubic root of 2618870321 is about 1378.3875167629.

The spelling of 2618870321 in words is "two billion, six hundred eighteen million, eight hundred seventy thousand, three hundred twenty-one".