2145441005 has 8 divisors (see below), whose sum is σ = 2598149400. Its totient is φ = 1700606016.

The previous prime is 2145440951. The next prime is 2145441047. The reversal of 2145441005 is 5001445412.

It can be written as a sum of positive squares in 4 ways, for example, as 399120484 + 1746320521 = 19978^2 + 41789^2 .

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 2145441005 - 2²⁰ = 2144392429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1967750 + ... + 1968839.

It is an arithmetic number, because the mean of its divisors is an integer number (324768675).

Almost surely, 2^2145441005 is an apocalyptic number.

It is an amenable number.

2145441005 is a deficient number, since it is larger than the sum of its proper divisors (452708395).

2145441005 is a wasteful number, since it uses less digits than its factorization.

2145441005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936703.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2145441005 is about 46318.9054814554. The cubic root of 2145441005 is about 1289.7499675656.

Adding to 2145441005 its reverse (5001445412), we get a palindrome (7146886417).

The spelling of 2145441005 in words is "two billion, one hundred forty-five million, four hundred forty-one thousand, five".