198270186136 has 64 divisors (see below), whose sum is σ = 421932072960. Its totient is φ = 86528736000.

The previous prime is 198270186083. The next prime is 198270186161. The reversal of 198270186136 is 631681072891.

198270186136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×198270186136² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60316 + ... + 632596.

It is an arithmetic number, because the mean of its divisors is an integer number (6592688640).

Almost surely, 2^198270186136 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 198270186136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210966036480).

198270186136 is an abundant number, since it is smaller than the sum of its proper divisors (223661886824).

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

198270186136 is a wasteful number, since it uses less digits than its factorization.

198270186136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572456 (or 572452 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 198270186136 in words is "one hundred ninety-eight billion, two hundred seventy million, one hundred eighty-six thousand, one hundred thirty-six".