4445503613 has 4 divisors (see below), whose sum is σ = 4445747388. Its totient is φ = 4445259840.

The previous prime is 4445503607. The next prime is 4445503681. The reversal of 4445503613 is 3163055444.

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 2091507289 + 2353996324 = 45733^2 + 48518^2 .

It is a cyclic number.

It is not a de Polignac number, because 4445503613 - 2²⁶ = 4378394749 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 (4445503913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92108 + ... + 131813.

It is an arithmetic number, because the mean of its divisors is an integer number (1111436847).

Almost surely, 2^4445503613 is an apocalyptic number.

It is an amenable number.

4445503613 is a deficient number, since it is larger than the sum of its proper divisors (243775).

4445503613 is a wasteful number, since it uses less digits than its factorization.

4445503613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243774.

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

The square root of 4445503613 is about 66674.6099576143. The cubic root of 4445503613 is about 1644.2719792273.

The spelling of 4445503613 in words is "four billion, four hundred forty-five million, five hundred three thousand, six hundred thirteen".