4421965851 has 40 divisors (see below), whose sum is σ = 6735438864. Its totient is φ = 2890598400.

The previous prime is 4421965837. The next prime is 4421965859. The reversal of 4421965851 is 1585691244.

4421965851 is a `hidden beast` number, since 44 + 21 + 9 + 6 + 585 + 1 = 666.

It is not a de Polignac number, because 4421965851 - 2²¹ = 4419868699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4421965797 and 4421965806.

It is not an unprimeable number, because it can be changed into a prime (4421965859) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 918651 + ... + 923451.

Almost surely, 2^4421965851 is an apocalyptic number.

4421965851 is a deficient number, since it is larger than the sum of its proper divisors (2313473013).

4421965851 is a wasteful number, since it uses less digits than its factorization.

4421965851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5033 (or 5024 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 4421965851 is about 66497.8635070331. The cubic root of 4421965851 is about 1641.3648477389.

The spelling of 4421965851 in words is "four billion, four hundred twenty-one million, nine hundred sixty-five thousand, eight hundred fifty-one".