3982498181 has 4 divisors (see below), whose sum is σ = 3982626252. Its totient is φ = 3982370112.

The previous prime is 3982498129. The next prime is 3982498187. The reversal of 3982498181 is 1818942893.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 763637956 + 3218860225 = 27634^2 + 56735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3982498181 is a prime.

It is a super-2 number, since 2×3982498181² = 31720583523336617522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3982498187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15725 + ... + 90621.

It is an arithmetic number, because the mean of its divisors is an integer number (995656563).

Almost surely, 2^3982498181 is an apocalyptic number.

It is an amenable number.

3982498181 is a deficient number, since it is larger than the sum of its proper divisors (128071).

3982498181 is an equidigital number, since it uses as much as digits as its factorization.

3982498181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128070.

The product of its digits is 995328, while the sum is 53.

The square root of 3982498181 is about 63107.0374918677. The cubic root of 3982498181 is about 1585.0824665601.

The spelling of 3982498181 in words is "three billion, nine hundred eighty-two million, four hundred ninety-eight thousand, one hundred eighty-one".