2621979859 has 2 divisors, whose sum is σ = 2621979860. Its totient is φ = 2621979858.

The previous prime is 2621979851. The next prime is 2621979947. The reversal of 2621979859 is 9589791262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2621979859 - 2³ = 2621979851 is a prime.

It is not a weakly prime, because it can be changed into another prime (2621979851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310989929 + 1310989930.

It is an arithmetic number, because the mean of its divisors is an integer number (1310989930).

Almost surely, 2^2621979859 is an apocalyptic number.

2621979859 is a deficient number, since it is larger than the sum of its proper divisors (1).

2621979859 is an equidigital number, since it uses as much as digits as its factorization.

2621979859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 58.

The square root of 2621979859 is about 51205.2717891430. The cubic root of 2621979859 is about 1378.9328477080.

The spelling of 2621979859 in words is "two billion, six hundred twenty-one million, nine hundred seventy-nine thousand, eight hundred fifty-nine".