4491642492 has 72 divisors (see below), whose sum is σ = 11883414816. Its totient is φ = 1427779584.

The previous prime is 4491642481. The next prime is 4491642557. The reversal of 4491642492 is 2942461944.

4491642492 is a `hidden beast` number, since 449 + 164 + 2 + 49 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 270988 + ... + 287084.

It is an arithmetic number, because the mean of its divisors is an integer number (165047428).

Almost surely, 2^4491642492 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 4491642492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5941707408).

4491642492 is an abundant number, since it is smaller than the sum of its proper divisors (7391772324).

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

4491642492 is a wasteful number, since it uses less digits than its factorization.

4491642492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16467 (or 16462 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 4491642492 is about 67019.7171883021. The cubic root of 4491642492 is about 1649.9409213007.

The spelling of 4491642492 in words is "four billion, four hundred ninety-one million, six hundred forty-two thousand, four hundred ninety-two".