2315756645 has 8 divisors (see below), whose sum is σ = 2781829656. Its totient is φ = 1850657536.

The previous prime is 2315756579. The next prime is 2315756669. The reversal of 2315756645 is 5466575132.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 71081761 + 2244674884 = 8431^2 + 47378^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2315756645 - 2¹⁴ = 2315740261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2315756596 and 2315756605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238232 + ... + 247761.

It is an arithmetic number, because the mean of its divisors is an integer number (347728707).

Almost surely, 2^2315756645 is an apocalyptic number.

It is an amenable number.

2315756645 is a deficient number, since it is larger than the sum of its proper divisors (466073011).

2315756645 is an equidigital number, since it uses as much as digits as its factorization.

2315756645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486951.

The product of its digits is 756000, while the sum is 44.

The square root of 2315756645 is about 48122.3092234776. The cubic root of 2315756645 is about 1323.0135931143.

The spelling of 2315756645 in words is "two billion, three hundred fifteen million, seven hundred fifty-six thousand, six hundred forty-five".