4981981185 has 24 divisors (see below), whose sum is σ = 8798370984. Its totient is φ = 2606922240.

The previous prime is 4981981157. The next prime is 4981981211. The reversal of 4981981185 is 5811891894.

It can be written as a sum of positive squares in 4 ways, for example, as 1486333809 + 3495647376 = 38553^2 + 59124^2 .

It is not a de Polignac number, because 4981981185 - 2²⁰ = 4980932609 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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, 1042056 + ... + 1046825.

It is an arithmetic number, because the mean of its divisors is an integer number (366598791).

Almost surely, 2^4981981185 is an apocalyptic number.

4981981185 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4981981185 is a deficient number, since it is larger than the sum of its proper divisors (3816389799).

4981981185 is a wasteful number, since it uses less digits than its factorization.

4981981185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088945 (or 2088942 counting only the distinct ones).

The product of its digits is 829440, while the sum is 54.

The square root of 4981981185 is about 70583.1508576941. The cubic root of 4981981185 is about 1707.9193581930.

The spelling of 4981981185 in words is "four billion, nine hundred eighty-one million, nine hundred eighty-one thousand, one hundred eighty-five".