3634905421 has 8 divisors (see below), whose sum is σ = 4212687744. Its totient is φ = 3071750640.

The previous prime is 3634905397. The next prime is 3634905427. The reversal of 3634905421 is 1245094363.

3634905421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3634905421 - 2⁷ = 3634905293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3634905427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3656350 + ... + 3657343.

It is an arithmetic number, because the mean of its divisors is an integer number (526585968).

Almost surely, 2^3634905421 is an apocalyptic number.

It is an amenable number.

3634905421 is a deficient number, since it is larger than the sum of its proper divisors (577782323).

3634905421 is an equidigital number, since it uses as much as digits as its factorization.

3634905421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7313771.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 3634905421 is about 60290.1768201089. The cubic root of 3634905421 is about 1537.5563399365.

Adding to 3634905421 its reverse (1245094363), we get a palindrome (4879999784).

The spelling of 3634905421 in words is "three billion, six hundred thirty-four million, nine hundred five thousand, four hundred twenty-one".