1989468201338 has 32 divisors (see below), whose sum is σ = 3149508096000. Its totient is φ = 939909939696.

The previous prime is 1989468201317. The next prime is 1989468201397. The reversal of 1989468201338 is 8331028649891.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24154895 + ... + 24237117.

It is an arithmetic number, because the mean of its divisors is an integer number (98422128000).

Almost surely, 2^{1989468201338} is an apocalyptic number.

1989468201338 is a deficient number, since it is larger than the sum of its proper divisors (1160039894662).

1989468201338 is a wasteful number, since it uses less digits than its factorization.

1989468201338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83906.

The product of its (nonzero) digits is 17915904, while the sum is 62.

The spelling of 1989468201338 in words is "one trillion, nine hundred eighty-nine billion, four hundred sixty-eight million, two hundred one thousand, three hundred thirty-eight".