198137492 has 48 divisors (see below), whose sum is σ = 415285248. Its totient is φ = 80926560.

The previous prime is 198137473. The next prime is 198137497. The reversal of 198137492 is 294731891.

It is a super-3 number, since 3×198137492³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198137497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56453 + ... + 59859.

It is an arithmetic number, because the mean of its divisors is an integer number (8651776).

Almost surely, 2^198137492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198137492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207642624).

198137492 is an abundant number, since it is smaller than the sum of its proper divisors (217147756).

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

198137492 is a wasteful number, since it uses less digits than its factorization.

198137492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3516 (or 3514 counting only the distinct ones).

The product of its digits is 108864, while the sum is 44.

The square root of 198137492 is about 14076.1319971077. The cubic root of 198137492 is about 582.9825477016.

The spelling of 198137492 in words is "one hundred ninety-eight million, one hundred thirty-seven thousand, four hundred ninety-two".