1998615882 has 16 divisors (see below), whose sum is σ = 3997824480. Its totient is φ = 666106512.

The previous prime is 1998615851. The next prime is 1998615943. The reversal of 1998615882 is 2885168991.

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, 27688 + ... + 69020.

It is an arithmetic number, because the mean of its divisors is an integer number (249864030).

Almost surely, 2^1998615882 is an apocalyptic number.

1998615882 is an abundant number, since it is smaller than the sum of its proper divisors (1999208598).

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

1998615882 is a wasteful number, since it uses less digits than its factorization.

1998615882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49397.

The product of its digits is 2488320, while the sum is 57.

The square root of 1998615882 is about 44705.8819619969. The cubic root of 1998615882 is about 1259.6303362536.

The spelling of 1998615882 in words is "one billion, nine hundred ninety-eight million, six hundred fifteen thousand, eight hundred eighty-two".