198462287898 has 48 divisors (see below), whose sum is σ = 512796974976. Its totient is φ = 54238140000.

The previous prime is 198462287873. The next prime is 198462287899. The reversal of 198462287898 is 898782264891.

198462287898 is a `hidden beast` number, since 1 + 9 + 8 + 462 + 2 + 8 + 78 + 98 = 666.

It is not an unprimeable number, because it can be changed into a prime (198462287899) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34238353 + ... + 34244148.

It is an arithmetic number, because the mean of its divisors is an integer number (10683270312).

Almost surely, 2^198462287898 is an apocalyptic number.

198462287898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

198462287898 is an abundant number, since it is smaller than the sum of its proper divisors (314334687078).

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

198462287898 is a wasteful number, since it uses less digits than its factorization.

198462287898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68482539 (or 68482536 counting only the distinct ones).

The product of its digits is 222953472, while the sum is 72.

The spelling of 198462287898 in words is "one hundred ninety-eight billion, four hundred sixty-two million, two hundred eighty-seven thousand, eight hundred ninety-eight".