198134986 has 32 divisors (see below), whose sum is σ = 349765632. Its totient is φ = 82419120.

The previous prime is 198134969. The next prime is 198134987. The reversal of 198134986 is 689431891.

It is a super-3 number, since 3×198134986³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (198134987) 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, 82381 + ... + 84751.

It is an arithmetic number, because the mean of its divisors is an integer number (10930176).

Almost surely, 2^198134986 is an apocalyptic number.

198134986 is a deficient number, since it is larger than the sum of its proper divisors (151630646).

198134986 is a wasteful number, since it uses less digits than its factorization.

198134986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554.

The product of its digits is 373248, while the sum is 49.

The square root of 198134986 is about 14076.0429808949. The cubic root of 198134986 is about 582.9800898790.

The spelling of 198134986 in words is "one hundred ninety-eight million, one hundred thirty-four thousand, nine hundred eighty-six".