4897387818 has 60 divisors (see below), whose sum is σ = 11363312070. Its totient is φ = 1574627040.

The previous prime is 4897387799. The next prime is 4897387837. The reversal of 4897387818 is 8187837984.

4897387818 is a `hidden beast` number, since 489 + 73 + 8 + 7 + 81 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (4897387799) and next prime (4897387837).

It can be written as a sum of positive squares in 3 ways, for example, as 4475208609 + 422179209 = 66897^2 + 20547^2 .

It is a super-2 number, since 2×4897387818² = 47968814879789602248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 4796148 + ... + 4797168.

Almost surely, 2^4897387818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4897387818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5681656035).

4897387818 is an abundant number, since it is smaller than the sum of its proper divisors (6465924252).

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

4897387818 is an equidigital number, since it uses as much as digits as its factorization.

4897387818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085 (or 1055 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 63.

The square root of 4897387818 is about 69981.3390697835. The cubic root of 4897387818 is about 1698.1973761995.

The spelling of 4897387818 in words is "four billion, eight hundred ninety-seven million, three hundred eighty-seven thousand, eight hundred eighteen".