4645644444 has 144 divisors (see below), whose sum is σ = 13975416000. Its totient is φ = 1273079808.

The previous prime is 4645644433. The next prime is 4645644467. The reversal of 4645644444 is 4444465464.

4645644444 is a `hidden beast` number, since 4 + 6 + 4 + 564 + 44 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 4645644444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1145332 + ... + 1149380.

It is an arithmetic number, because the mean of its divisors is an integer number (97051500).

Almost surely, 2^4645644444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4645644444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6987708000).

4645644444 is an abundant number, since it is smaller than the sum of its proper divisors (9329771556).

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

4645644444 is a wasteful number, since it uses less digits than its factorization.

4645644444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4252 (or 4247 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 45.

The square root of 4645644444 is about 68158.9645167824. The cubic root of 4645644444 is about 1668.5862327021.

The spelling of 4645644444 in words is "four billion, six hundred forty-five million, six hundred forty-four thousand, four hundred forty-four".