1998217082 has 16 divisors (see below), whose sum is σ = 3099140352. Its totient is φ = 965626080.

The previous prime is 1998217063. The next prime is 1998217093. The reversal of 1998217082 is 2807128991.

It is a super-3 number, since 3×1998217082³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105098 + ... + 122645.

It is an arithmetic number, because the mean of its divisors is an integer number (193696272).

Almost surely, 2^1998217082 is an apocalyptic number.

1998217082 is a deficient number, since it is larger than the sum of its proper divisors (1100923270).

1998217082 is a wasteful number, since it uses less digits than its factorization.

1998217082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227893.

The product of its (nonzero) digits is 145152, while the sum is 47.

The square root of 1998217082 is about 44701.4214762797. The cubic root of 1998217082 is about 1259.5465492691.

The spelling of 1998217082 in words is "one billion, nine hundred ninety-eight million, two hundred seventeen thousand, eighty-two".