198285910564 has 72 divisors (see below), whose sum is σ = 449892545760. Its totient is φ = 75771327744.

The previous prime is 198285910553. The next prime is 198285910573. The reversal of 198285910564 is 465019582891.

It is a junction number, because it is equal to n+sod(n) for n = 198285910499 and 198285910508.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1502734 + ... + 1629349.

It is an arithmetic number, because the mean of its divisors is an integer number (6248507580).

Almost surely, 2^198285910564 is an apocalyptic number.

198285910564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

198285910564 is an abundant number, since it is smaller than the sum of its proper divisors (251606635196).

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

198285910564 is a wasteful number, since it uses less digits than its factorization.

198285910564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3132137 (or 3132128 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 58.

The spelling of 198285910564 in words is "one hundred ninety-eight billion, two hundred eighty-five million, nine hundred ten thousand, five hundred sixty-four".