3644823546 has 144 divisors (see below), whose sum is σ = 9974974464. Its totient is φ = 953322048.

The previous prime is 3644823529. The next prime is 3644823557. The reversal of 3644823546 is 6453284463.

3644823546 is a `hidden beast` number, since 3 + 64 + 48 + 2 + 3 + 546 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1454931 + ... + 1457433.

It is an arithmetic number, because the mean of its divisors is an integer number (69270656).

Almost surely, 2^3644823546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3644823546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4987487232).

3644823546 is an abundant number, since it is smaller than the sum of its proper divisors (6330150918).

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

3644823546 is a wasteful number, since it uses less digits than its factorization.

3644823546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665 (or 2655 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 45.

The square root of 3644823546 is about 60372.3740298491. The cubic root of 3644823546 is about 1538.9535176909.

The spelling of 3644823546 in words is "three billion, six hundred forty-four million, eight hundred twenty-three thousand, five hundred forty-six".