4145227643 has 4 divisors (see below), whose sum is σ = 4145395320. Its totient is φ = 4145059968.

The previous prime is 4145227631. The next prime is 4145227721. The reversal of 4145227643 is 3467225414.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4145227643 - 2¹⁶ = 4145162107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4145227597 and 4145227606.

It is not an unprimeable number, because it can be changed into a prime (4145227843) 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, 38630 + ... + 98907.

It is an arithmetic number, because the mean of its divisors is an integer number (1036348830).

Almost surely, 2^4145227643 is an apocalyptic number.

4145227643 is a deficient number, since it is larger than the sum of its proper divisors (167677).

4145227643 is a wasteful number, since it uses less digits than its factorization.

4145227643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167676.

The product of its digits is 161280, while the sum is 38.

The square root of 4145227643 is about 64383.4423046795. The cubic root of 4145227643 is about 1606.3843405876.

The spelling of 4145227643 in words is "four billion, one hundred forty-five million, two hundred twenty-seven thousand, six hundred forty-three".