3634333921 has 2 divisors, whose sum is σ = 3634333922. Its totient is φ = 3634333920.

The previous prime is 3634333919. The next prime is 3634334009. The reversal of 3634333921 is 1293334363.

3634333921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3274700625 + 359633296 = 57225^2 + 18964^2 .

It is a cyclic number.

It is not a de Polignac number, because 3634333921 - 2¹ = 3634333919 is a prime.

Together with 3634333919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3634333121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1817166960 + 1817166961.

It is an arithmetic number, because the mean of its divisors is an integer number (1817166961).

Almost surely, 2^3634333921 is an apocalyptic number.

It is an amenable number.

3634333921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3634333921 is an equidigital number, since it uses as much as digits as its factorization.

3634333921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 37.

The square root of 3634333921 is about 60285.4370557268. The cubic root of 3634333921 is about 1537.4757546665.

The spelling of 3634333921 in words is "three billion, six hundred thirty-four million, three hundred thirty-three thousand, nine hundred twenty-one".