1998374710320 has 240 divisors, whose sum is σ = 6970639183872. Its totient is φ = 532067823360.

The previous prime is 1998374710207. The next prime is 1998374710357. The reversal of 1998374710320 is 230174738991.

1998374710320 is a `hidden beast` number, since 1 + 99 + 83 + 7 + 471 + 0 + 3 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 12419985 + ... + 12579855.

Almost surely, 2^{1998374710320} is an apocalyptic number.

1998374710320 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 1998374710320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3485319591936).

1998374710320 is an abundant number, since it is smaller than the sum of its proper divisors (4972264473552).

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

1998374710320 is a wasteful number, since it uses less digits than its factorization.

1998374710320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160542 (or 160524 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 1998374710320 in words is "one trillion, nine hundred ninety-eight billion, three hundred seventy-four million, seven hundred ten thousand, three hundred twenty".