198407481570 has 96 divisors (see below), whose sum is σ = 543310447680. Its totient is φ = 50096257920.

The previous prime is 198407481499. The next prime is 198407481581. The reversal of 198407481570 is 75184704891.

198407481570 is a `hidden beast` number, since 1 + 98 + 4 + 0 + 7 + 481 + 5 + 70 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3151137 + ... + 3213483.

It is an arithmetic number, because the mean of its divisors is an integer number (5659483830).

Almost surely, 2^198407481570 is an apocalyptic number.

198407481570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 198407481570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271655223840).

198407481570 is an abundant number, since it is smaller than the sum of its proper divisors (344902966110).

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

198407481570 is a wasteful number, since it uses less digits than its factorization.

198407481570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64240 (or 64237 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 54.

The spelling of 198407481570 in words is "one hundred ninety-eight billion, four hundred seven million, four hundred eighty-one thousand, five hundred seventy".