4491866610 has 256 divisors, whose sum is σ = 15255060480. Its totient is φ = 913317120.

The previous prime is 4491866569. The next prime is 4491866623. The reversal of 4491866610 is 166681944.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 974832 + ... + 979428.

It is an arithmetic number, because the mean of its divisors is an integer number (59590080).

Almost surely, 2^4491866610 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4491866610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7627530240).

4491866610 is an abundant number, since it is smaller than the sum of its proper divisors (10763193870).

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

4491866610 is a wasteful number, since it uses less digits than its factorization.

4491866610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4678 (or 4672 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 4491866610 is about 67021.3891977777. The cubic root of 4491866610 is about 1649.9683630298.

The spelling of 4491866610 in words is "four billion, four hundred ninety-one million, eight hundred sixty-six thousand, six hundred ten".