3641806553 has 16 divisors (see below), whose sum is σ = 4602638976. Its totient is φ = 2798893440.

The previous prime is 3641806523. The next prime is 3641806607. The reversal of 3641806553 is 3556081463.

3641806553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3641806553 - 2⁶ = 3641806489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3641806553.

It is not an unprimeable number, because it can be changed into a prime (3641806523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318326 + ... + 329567.

It is an arithmetic number, because the mean of its divisors is an integer number (287664936).

Almost surely, 2^3641806553 is an apocalyptic number.

It is an amenable number.

3641806553 is a deficient number, since it is larger than the sum of its proper divisors (960832423).

3641806553 is a wasteful number, since it uses less digits than its factorization.

3641806553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647984.

The product of its (nonzero) digits is 259200, while the sum is 41.

The square root of 3641806553 is about 60347.3823210253. The cubic root of 3641806553 is about 1538.5287789163.

The spelling of 3641806553 in words is "three billion, six hundred forty-one million, eight hundred six thousand, five hundred fifty-three".