198387612 has 36 divisors (see below), whose sum is σ = 502662160. Its totient is φ = 65973312.

The previous prime is 198387593. The next prime is 198387619. The reversal of 198387612 is 216783891.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198387619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9528 + ... + 22080.

Almost surely, 2^198387612 is an apocalyptic number.

198387612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

198387612 is an abundant number, since it is smaller than the sum of its proper divisors (304274548).

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

198387612 is a wasteful number, since it uses less digits than its factorization.

198387612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13002 (or 12997 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 198387612 is about 14085.0137380125. The cubic root of 198387612 is about 583.2277550058.

The spelling of 198387612 in words is "one hundred ninety-eight million, three hundred eighty-seven thousand, six hundred twelve".