4026443645 has 32 divisors (see below), whose sum is σ = 5568466176. Its totient is φ = 2737843200.

The previous prime is 4026443621. The next prime is 4026443651. The reversal of 4026443645 is 5463446204.

It is a de Polignac number, because none of the positive numbers 2^k-4026443645 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4026443599 and 4026443608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2957765 + ... + 2959125.

It is an arithmetic number, because the mean of its divisors is an integer number (174014568).

Almost surely, 2^4026443645 is an apocalyptic number.

It is an amenable number.

4026443645 is a deficient number, since it is larger than the sum of its proper divisors (1542022531).

4026443645 is a wasteful number, since it uses less digits than its factorization.

4026443645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021.

The product of its (nonzero) digits is 276480, while the sum is 38.

The square root of 4026443645 is about 63454.2641987124. The cubic root of 4026443645 is about 1590.8914275338.

Adding to 4026443645 its reverse (5463446204), we get a palindrome (9489889849).

The spelling of 4026443645 in words is "four billion, twenty-six million, four hundred forty-three thousand, six hundred forty-five".