2418968621 has 2 divisors, whose sum is σ = 2418968622. Its totient is φ = 2418968620.

The previous prime is 2418968609. The next prime is 2418968623. The reversal of 2418968621 is 1268698142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2259956521 + 159012100 = 47539^2 + 12610^2 .

It is a cyclic number.

It is not a de Polignac number, because 2418968621 - 2⁶ = 2418968557 is a prime.

It is a Sophie Germain prime.

Together with 2418968623, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2418968623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1209484310 + 1209484311.

It is an arithmetic number, because the mean of its divisors is an integer number (1209484311).

Almost surely, 2^2418968621 is an apocalyptic number.

It is an amenable number.

2418968621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2418968621 is an equidigital number, since it uses as much as digits as its factorization.

2418968621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 47.

The square root of 2418968621 is about 49183.0115080401. The cubic root of 2418968621 is about 1342.3839313275.

The spelling of 2418968621 in words is "two billion, four hundred eighteen million, nine hundred sixty-eight thousand, six hundred twenty-one".