4344511644 has 72 divisors (see below), whose sum is σ = 11989531008. Its totient is φ = 1315506720.

The previous prime is 4344511643. The next prime is 4344511651. The reversal of 4344511644 is 4461154434.

4344511644 is a `hidden beast` number, since 4 + 3 + 4 + 4 + 5 + 1 + 1 + 644 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 4344511599 and 4344511608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4344511643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 632959 + ... + 639785.

It is an arithmetic number, because the mean of its divisors is an integer number (166521264).

Almost surely, 2^4344511644 is an apocalyptic number.

4344511644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4344511644 is an abundant number, since it is smaller than the sum of its proper divisors (7645019364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4344511644 is a wasteful number, since it uses less digits than its factorization.

4344511644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8455 (or 8450 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 4344511644 is about 65912.9095397859. The cubic root of 4344511644 is about 1631.7250789427.

The spelling of 4344511644 in words is "four billion, three hundred forty-four million, five hundred eleven thousand, six hundred forty-four".