198134371 has 16 divisors (see below), whose sum is σ = 216444960. Its totient is φ = 180610560.

The previous prime is 198134359. The next prime is 198134383. The reversal of 198134371 is 173431891.

198134371 is a nontrivial binomial coefficient, being equal to C(19907, 2).

It is an interprime number because it is at equal distance from previous prime (198134359) and next prime (198134383).

It is a cyclic number.

It is not a de Polignac number, because 198134371 - 2¹³ = 198126179 is a prime.

It is a super-3 number, since 3×198134371³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198134371.

It is not an unprimeable number, because it can be changed into a prime (198134171) 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, 168616 + ... + 169786.

It is an arithmetic number, because the mean of its divisors is an integer number (13527810).

Almost surely, 2^198134371 is an apocalyptic number.

198134371 is the 19906-th triangular number.

198134371 is the 6636-th centered nonagonal number.

198134371 is a deficient number, since it is larger than the sum of its proper divisors (18310589).

198134371 is a wasteful number, since it uses less digits than its factorization.

198134371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494.

The product of its digits is 18144, while the sum is 37.

The square root of 198134371 is about 14076.0211352498. The cubic root of 198134371 is about 582.9794866991.

The spelling of 198134371 in words is "one hundred ninety-eight million, one hundred thirty-four thousand, three hundred seventy-one".