2421718837 has 2 divisors, whose sum is σ = 2421718838. Its totient is φ = 2421718836.

The previous prime is 2421718811. The next prime is 2421718841. The reversal of 2421718837 is 7388171242.

2421718837 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2397962961 + 23755876 = 48969^2 + 4874^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421718837 - 2¹⁹ = 2421194549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2421718793 and 2421718802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2421718807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210859418 + 1210859419.

It is an arithmetic number, because the mean of its divisors is an integer number (1210859419).

Almost surely, 2^2421718837 is an apocalyptic number.

It is an amenable number.

2421718837 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421718837 is an equidigital number, since it uses as much as digits as its factorization.

2421718837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150528, while the sum is 43.

The square root of 2421718837 is about 49210.9625693300. The cubic root of 2421718837 is about 1342.8924741674.

The spelling of 2421718837 in words is "two billion, four hundred twenty-one million, seven hundred eighteen thousand, eight hundred thirty-seven".