2208975750749 has 4 divisors (see below), whose sum is σ = 2211833417436. Its totient is φ = 2206118084064.

The previous prime is 2208975750739. The next prime is 2208975750767. The reversal of 2208975750749 is 9470575798022.

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 101885448025 + 2107090302724 = 319195^2 + 1451582^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2208975750749 is a prime.

It is a super-2 number, since 2×2208975750749² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2208975750739) by changing a digit.

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, 1428832184 + ... + 1428833729.

It is an arithmetic number, because the mean of its divisors is an integer number (552958354359).

Almost surely, 2^{2208975750749} is an apocalyptic number.

It is an amenable number.

2208975750749 is a deficient number, since it is larger than the sum of its proper divisors (2857666687).

2208975750749 is an equidigital number, since it uses as much as digits as its factorization.

2208975750749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857666686.

The product of its (nonzero) digits is 88905600, while the sum is 65.

The spelling of 2208975750749 in words is "two trillion, two hundred eight billion, nine hundred seventy-five million, seven hundred fifty thousand, seven hundred forty-nine".