1988198 has 8 divisors (see below), whose sum is σ = 3139320. Its totient is φ = 941760.

The previous prime is 1988197. The next prime is 1988219. The reversal of 1988198 is 8918891.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988197) 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, 26123 + ... + 26198.

It is an arithmetic number, because the mean of its divisors is an integer number (392415).

2^1988198 is an apocalyptic number.

1988198 is a deficient number, since it is larger than the sum of its proper divisors (1151122).

1988198 is a wasteful number, since it uses less digits than its factorization.

1988198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52342.

The product of its digits is 41472, while the sum is 44.

The square root of 1988198 is about 1410.0347513448. The cubic root of 1988198 is about 125.7437894399.

The spelling of 1988198 in words is "one million, nine hundred eighty-eight thousand, one hundred ninety-eight".