1000198854900 has 864 divisors, whose sum is σ = 3734400983040. Its totient is φ = 219213066240.

The previous prime is 1000198854899. The next prime is 1000198854911. The reversal of 1000198854900 is 94588910001.

1000198854900 is a `hidden beast` number, since 10 + 0 + 0 + 1 + 98 + 8 + 549 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 5587703011 + ... + 5587703189.

It is an arithmetic number, because the mean of its divisors is an integer number (4322223360).

Almost surely, 2^{1000198854900} is an apocalyptic number.

1000198854900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000198854900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1867200491520).

1000198854900 is an abundant number, since it is smaller than the sum of its proper divisors (2734202128140).

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

1000198854900 is a wasteful number, since it uses less digits than its factorization.

1000198854900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The spelling of 1000198854900 in words is "one trillion, one hundred ninety-eight million, eight hundred fifty-four thousand, nine hundred".