1998068424 has 64 divisors (see below), whose sum is σ = 5736096000. Its totient is φ = 573606720.

The previous prime is 1998068399. The next prime is 1998068431. The reversal of 1998068424 is 4248608991.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194154 + ... + 204185.

It is an arithmetic number, because the mean of its divisors is an integer number (89626500).

Almost surely, 2^1998068424 is an apocalyptic number.

It is an amenable number.

1998068424 is an abundant number, since it is smaller than the sum of its proper divisors (3738027576).

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

1998068424 is a wasteful number, since it uses less digits than its factorization.

1998068424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398378 (or 398374 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 1998068424 is about 44699.7586570666. The cubic root of 1998068424 is about 1259.5153137048.

The spelling of 1998068424 in words is "one billion, nine hundred ninety-eight million, sixty-eight thousand, four hundred twenty-four".