1998936160 has 96 divisors (see below), whose sum is σ = 5385012192. Its totient is φ = 694640640.

The previous prime is 1998936119. The next prime is 1998936161. The reversal of 1998936160 is 616398991.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 1998936098 and 1998936107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1998936161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7095 + ... + 63625.

It is an arithmetic number, because the mean of its divisors is an integer number (56093877).

Almost surely, 2^1998936160 is an apocalyptic number.

1998936160 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 1998936160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2692506096).

1998936160 is an abundant number, since it is smaller than the sum of its proper divisors (3386076032).

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

1998936160 is a wasteful number, since it uses less digits than its factorization.

1998936160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56576 (or 56568 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 52.

The square root of 1998936160 is about 44709.4638751126. The cubic root of 1998936160 is about 1259.6976178726.

The spelling of 1998936160 in words is "one billion, nine hundred ninety-eight million, nine hundred thirty-six thousand, one hundred sixty".