2390919965 has 12 divisors (see below), whose sum is σ = 3337529436. Its totient is φ = 1639487808.

The previous prime is 2390919931. The next prime is 2390919977. The reversal of 2390919965 is 5699190932.

It can be written as a sum of positive squares in 2 ways, for example, as 993132196 + 1397787769 = 31514^2 + 37387^2 .

It is not a de Polignac number, because 2390919965 - 2¹² = 2390915869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4879184 + ... + 4879673.

It is an arithmetic number, because the mean of its divisors is an integer number (278127453).

Almost surely, 2^2390919965 is an apocalyptic number.

It is an amenable number.

2390919965 is a deficient number, since it is larger than the sum of its proper divisors (946609471).

2390919965 is an equidigital number, since it uses as much as digits as its factorization.

2390919965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9758876 (or 9758869 counting only the distinct ones).

The product of its (nonzero) digits is 1180980, while the sum is 53.

The square root of 2390919965 is about 48897.0343170217. The cubic root of 2390919965 is about 1337.1753011557.

The spelling of 2390919965 in words is "two billion, three hundred ninety million, nine hundred nineteen thousand, nine hundred sixty-five".