198136884550 has 24 divisors (see below), whose sum is σ = 402037752312. Its totient is φ = 72049776000.

The previous prime is 198136884487. The next prime is 198136884551. The reversal of 198136884550 is 55488631891.

It is a happy number.

It is a super-3 number, since 3×198136884550³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198136884551) 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, 180123891 + ... + 180124990.

It is an arithmetic number, because the mean of its divisors is an integer number (16751573013).

Almost surely, 2^198136884550 is an apocalyptic number.

198136884550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198136884550 is an abundant number, since it is smaller than the sum of its proper divisors (203900867762).

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

198136884550 is a wasteful number, since it uses less digits than its factorization.

198136884550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360248904 (or 360248899 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 58.

The spelling of 198136884550 in words is "one hundred ninety-eight billion, one hundred thirty-six million, eight hundred eighty-four thousand, five hundred fifty".