4998181 has 2 divisors, whose sum is σ = 4998182. Its totient is φ = 4998180.

The previous prime is 4998137. The next prime is 4998211. The reversal of 4998181 is 1818994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4972900 + 25281 = 2230^2 + 159^2 .

It is a cyclic number.

It is not a de Polignac number, because 4998181 - 2¹⁵ = 4965413 is a prime.

It is a super-2 number, since 2×4998181² = 49963626617522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4998101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2499090 + 2499091.

It is an arithmetic number, because the mean of its divisors is an integer number (2499091).

Almost surely, 2^4998181 is an apocalyptic number.

It is an amenable number.

4998181 is a deficient number, since it is larger than the sum of its proper divisors (1).

4998181 is an equidigital number, since it uses as much as digits as its factorization.

4998181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 40.

The square root of 4998181 is about 2235.6611997349. The cubic root of 4998181 is about 170.9768558442.

The spelling of 4998181 in words is "four million, nine hundred ninety-eight thousand, one hundred eighty-one".