1994198 has 4 divisors (see below), whose sum is σ = 2991300. Its totient is φ = 997098.

The previous prime is 1994191. The next prime is 1994203. The reversal of 1994198 is 8914991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8914991 = 317 ⋅28123.

It is a super-3 number, since 3×1994198³ = 23791733351730271176, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498548 + ... + 498551.

It is an arithmetic number, because the mean of its divisors is an integer number (747825).

2^1994198 is an apocalyptic number.

1994198 is a deficient number, since it is larger than the sum of its proper divisors (997102).

1994198 is an equidigital number, since it uses as much as digits as its factorization.

1994198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997101.

The product of its digits is 23328, while the sum is 41.

The square root of 1994198 is about 1412.1607557215. The cubic root of 1994198 is about 125.8701526199.

The spelling of 1994198 in words is "one million, nine hundred ninety-four thousand, one hundred ninety-eight".