2045443517 has 8 divisors (see below), whose sum is σ = 2204636280. Its totient is φ = 1886515200.

The previous prime is 2045443507. The next prime is 2045443531. The reversal of 2045443517 is 7153445402.

It can be written as a sum of positive squares in 4 ways, for example, as 52441 + 2045391076 = 229^2 + 45226^2 .

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 2045443517 - 2¹² = 2045439421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045443507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49892 + ... + 81117.

It is an arithmetic number, because the mean of its divisors is an integer number (275579535).

Almost surely, 2^2045443517 is an apocalyptic number.

It is an amenable number.

2045443517 is a deficient number, since it is larger than the sum of its proper divisors (159192763).

2045443517 is a wasteful number, since it uses less digits than its factorization.

2045443517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132223.

The product of its (nonzero) digits is 67200, while the sum is 35.

The square root of 2045443517 is about 45226.5797623477. The cubic root of 2045443517 is about 1269.3922148097.

Adding to 2045443517 its reverse (7153445402), we get a palindrome (9198888919).

The spelling of 2045443517 in words is "two billion, forty-five million, four hundred forty-three thousand, five hundred seventeen".