2390418661 has 2 divisors, whose sum is σ = 2390418662. Its totient is φ = 2390418660.

The previous prime is 2390418659. The next prime is 2390418683. The reversal of 2390418661 is 1668140932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2351668036 + 38750625 = 48494^2 + 6225^2 .

It is a cyclic number.

It is not a de Polignac number, because 2390418661 - 2¹ = 2390418659 is a prime.

Together with 2390418659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2390418601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1195209330 + 1195209331.

It is an arithmetic number, because the mean of its divisors is an integer number (1195209331).

Almost surely, 2^2390418661 is an apocalyptic number.

It is an amenable number.

2390418661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2390418661 is an equidigital number, since it uses as much as digits as its factorization.

2390418661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 2390418661 is about 48891.9079296360. The cubic root of 2390418661 is about 1337.0818394768.

The spelling of 2390418661 in words is "two billion, three hundred ninety million, four hundred eighteen thousand, six hundred sixty-one".