4494021588 has 144 divisors (see below), whose sum is σ = 14172587520. Its totient is φ = 1216391904.

The previous prime is 4494021557. The next prime is 4494021593. The reversal of 4494021588 is 8851204944.

4494021588 is a `hidden beast` number, since 4 + 4 + 9 + 40 + 21 + 588 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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, 111895 + ... + 146657.

Almost surely, 2^4494021588 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 4494021588, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7086293760).

4494021588 is an abundant number, since it is smaller than the sum of its proper divisors (9678565932).

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

4494021588 is a wasteful number, since it uses less digits than its factorization.

4494021588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34808 (or 34794 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 4494021588 is about 67037.4640630148. The cubic root of 4494021588 is about 1650.2321788978.

The spelling of 4494021588 in words is "four billion, four hundred ninety-four million, twenty-one thousand, five hundred eighty-eight".