1998182016 has 48 divisors (see below), whose sum is σ = 5749980210. Its totient is φ = 666060288.

The previous prime is 1998182009. The next prime is 1998182033. The reversal of 1998182016 is 6102818991.

It can be written as a sum of positive squares in only one way, i.e., 1332542016 + 665640000 = 36504^2 + 25800^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 866115 + ... + 868418.

Almost surely, 2^1998182016 is an apocalyptic number.

1998182016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1998182016 is an abundant number, since it is smaller than the sum of its proper divisors (3751798194).

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

1998182016 is a wasteful number, since it uses less digits than its factorization.

1998182016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734553 (or 1734538 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 45.

The square root of 1998182016 is about 44701.0292498954. The cubic root of 1998182016 is about 1259.5391814480.

The spelling of 1998182016 in words is "one billion, nine hundred ninety-eight million, one hundred eighty-two thousand, sixteen".