1745220245 has 8 divisors (see below), whose sum is σ = 2095283160. Its totient is φ = 1395496960.

The previous prime is 1745220223. The next prime is 1745220247. The reversal of 1745220245 is 5420225471.

It can be written as a sum of positive squares in 4 ways, for example, as 108451396 + 1636768849 = 10414^2 + 40457^2 .

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

It is not a de Polignac number, because 1745220245 - 2²⁰ = 1744171669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1745220247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73460 + ... + 94269.

It is an arithmetic number, because the mean of its divisors is an integer number (261910395).

Almost surely, 2^1745220245 is an apocalyptic number.

It is an amenable number.

1745220245 is a deficient number, since it is larger than the sum of its proper divisors (350062915).

1745220245 is a wasteful number, since it uses less digits than its factorization.

1745220245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169815.

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 1745220245 is about 41775.8332651786. The cubic root of 1745220245 is about 1203.9729993706.

The spelling of 1745220245 in words is "one billion, seven hundred forty-five million, two hundred twenty thousand, two hundred forty-five".