2390691365 has 4 divisors (see below), whose sum is σ = 2868829644. Its totient is φ = 1912553088.

The previous prime is 2390691353. The next prime is 2390691371. The reversal of 2390691365 is 5631960932.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 311240164 + 2079451201 = 17642^2 + 45601^2 .

It is a cyclic number.

It is not a de Polignac number, because 2390691365 - 2⁴ = 2390691349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239069132 + ... + 239069141.

It is an arithmetic number, because the mean of its divisors is an integer number (717207411).

Almost surely, 2^2390691365 is an apocalyptic number.

It is an amenable number.

2390691365 is a deficient number, since it is larger than the sum of its proper divisors (478138279).

2390691365 is an equidigital number, since it uses as much as digits as its factorization.

2390691365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478138278.

The product of its (nonzero) digits is 262440, while the sum is 44.

The square root of 2390691365 is about 48894.6966960631. The cubic root of 2390691365 is about 1337.1326832483.

The spelling of 2390691365 in words is "two billion, three hundred ninety million, six hundred ninety-one thousand, three hundred sixty-five".