3644444463 has 16 divisors (see below), whose sum is σ = 5444282496. Its totient is φ = 2149057440.

The previous prime is 3644444423. The next prime is 3644444467.

3644444463 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 3644444463 - 2⁶ = 3644444399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644444467) 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, 1491181 + ... + 1493622.

It is an arithmetic number, because the mean of its divisors is an integer number (340267656).

Almost surely, 2^3644444463 is an apocalyptic number.

3644444463 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

3644444463 is a deficient number, since it is larger than the sum of its proper divisors (1799838033).

3644444463 is a wasteful number, since it uses less digits than its factorization.

3644444463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2984854.

The product of its digits is 1327104, while the sum is 42.

The square root of 3644444463 is about 60369.2344079333. The cubic root of 3644444463 is about 1538.9001624475.

The spelling of 3644444463 in words is "three billion, six hundred forty-four million, four hundred forty-four thousand, four hundred sixty-three".