4638198 has 16 divisors (see below), whose sum is σ = 9359856. Its totient is φ = 1532160.

The previous prime is 4638197. The next prime is 4638199. The reversal of 4638198 is 8918364.

It is an interprime number because it is at equal distance from previous prime (4638197) and next prime (4638199).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4638191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2743 + ... + 4098.

It is an arithmetic number, because the mean of its divisors is an integer number (584991).

Almost surely, 2^4638198 is an apocalyptic number.

4638198 is an abundant number, since it is smaller than the sum of its proper divisors (4721658).

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

4638198 is a wasteful number, since it uses less digits than its factorization.

4638198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6959.

The product of its digits is 41472, while the sum is 39.

The square root of 4638198 is about 2153.6476034858. The cubic root of 4638198 is about 166.7694237440.

The spelling of 4638198 in words is "four million, six hundred thirty-eight thousand, one hundred ninety-eight".