1998320696 has 16 divisors (see below), whose sum is σ = 3748081200. Its totient is φ = 998832384.

The previous prime is 1998320693. The next prime is 1998320711. The reversal of 1998320696 is 6960238991.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1998320693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14060 + ... + 64763.

It is an arithmetic number, because the mean of its divisors is an integer number (234255075).

Almost surely, 2^1998320696 is an apocalyptic number.

It is an amenable number.

1998320696 is a deficient number, since it is larger than the sum of its proper divisors (1749760504).

1998320696 is a wasteful number, since it uses less digits than its factorization.

1998320696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81998 (or 81994 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 53.

The square root of 1998320696 is about 44702.5804176895. The cubic root of 1998320696 is about 1259.5683194097.

The spelling of 1998320696 in words is "one billion, nine hundred ninety-eight million, three hundred twenty thousand, six hundred ninety-six".