2545918244 has 6 divisors (see below), whose sum is σ = 4455356934. Its totient is φ = 1272959120.

The previous prime is 2545918217. The next prime is 2545918267. The reversal of 2545918244 is 4428195452.

It can be written as a sum of positive squares in only one way, i.e., 2075895844 + 470022400 = 45562^2 + 21680^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2545918195 and 2545918204.

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 as a sum of consecutive naturals, namely, 318239777 + ... + 318239784.

It is an arithmetic number, because the mean of its divisors is an integer number (742559489).

Almost surely, 2^2545918244 is an apocalyptic number.

It is an amenable number.

2545918244 is a deficient number, since it is larger than the sum of its proper divisors (1909438690).

2545918244 is a wasteful number, since it uses less digits than its factorization.

2545918244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636479565 (or 636479563 counting only the distinct ones).

The product of its digits is 460800, while the sum is 44.

The square root of 2545918244 is about 50457.0930989886. The cubic root of 2545918244 is about 1365.4678666479.

The spelling of 2545918244 in words is "two billion, five hundred forty-five million, nine hundred eighteen thousand, two hundred forty-four".