4645343421 has 24 divisors (see below), whose sum is σ = 7068129120. Its totient is φ = 2931810336.

The previous prime is 4645343407. The next prime is 4645343471. The reversal of 4645343421 is 1243435464.

4645343421 is a `hidden beast` number, since 4 + 645 + 3 + 4 + 3 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 4645343421 - 2⁹ = 4645342909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4645343401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 251515 + ... + 269351.

It is an arithmetic number, because the mean of its divisors is an integer number (294505380).

Almost surely, 2^4645343421 is an apocalyptic number.

It is an amenable number.

4645343421 is a deficient number, since it is larger than the sum of its proper divisors (2422785699).

4645343421 is a wasteful number, since it uses less digits than its factorization.

4645343421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19385 (or 19382 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

The square root of 4645343421 is about 68156.7562388352. The cubic root of 4645343421 is about 1668.5501922281.

Adding to 4645343421 its reverse (1243435464), we get a palindrome (5888778885).

The spelling of 4645343421 in words is "four billion, six hundred forty-five million, three hundred forty-three thousand, four hundred twenty-one".