3644422453 has 4 divisors (see below), whose sum is σ = 4165054240. Its totient is φ = 3123790668.

The previous prime is 3644422451. The next prime is 3644422487. The reversal of 3644422453 is 3542244463.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3542244463 = 137 ⋅25855799.

It is a cyclic number.

It is not a de Polignac number, because 3644422453 - 2¹ = 3644422451 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 (3644422451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260315883 + ... + 260315896.

It is an arithmetic number, because the mean of its divisors is an integer number (1041263560).

Almost surely, 2^3644422453 is an apocalyptic number.

It is an amenable number.

3644422453 is a deficient number, since it is larger than the sum of its proper divisors (520631787).

3644422453 is an equidigital number, since it uses as much as digits as its factorization.

3644422453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520631786.

The product of its digits is 276480, while the sum is 37.

The square root of 3644422453 is about 60369.0521128169. The cubic root of 3644422453 is about 1538.8970644663.

The spelling of 3644422453 in words is "three billion, six hundred forty-four million, four hundred twenty-two thousand, four hundred fifty-three".