2245631345 has 4 divisors (see below), whose sum is σ = 2694757620. Its totient is φ = 1796505072.

The previous prime is 2245631279. The next prime is 2245631387. The reversal of 2245631345 is 5431365422.

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 553378576 + 1692252769 = 23524^2 + 41137^2 .

It is a cyclic number.

It is not a de Polignac number, because 2245631345 - 2¹⁶ = 2245565809 is a prime.

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, 224563130 + ... + 224563139.

It is an arithmetic number, because the mean of its divisors is an integer number (673689405).

Almost surely, 2^2245631345 is an apocalyptic number.

It is an amenable number.

2245631345 is a deficient number, since it is larger than the sum of its proper divisors (449126275).

2245631345 is an equidigital number, since it uses as much as digits as its factorization.

2245631345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449126274.

The product of its digits is 86400, while the sum is 35.

The square root of 2245631345 is about 47388.0928609709. The cubic root of 2245631345 is about 1309.5220650334.

Adding to 2245631345 its reverse (5431365422), we get a palindrome (7676996767).

The spelling of 2245631345 in words is "two billion, two hundred forty-five million, six hundred thirty-one thousand, three hundred forty-five".