1989041201839 has 8 divisors (see below), whose sum is σ = 2032276906800. Its totient is φ = 1946203982976.

The previous prime is 1989041201827. The next prime is 1989041201843. The reversal of 1989041201839 is 9381021409891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1989041201839 - 2⁷ = 1989041201711 is a prime.

It is a super-3 number, since 3×1989041201839³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1989041201839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1989041201339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99611434 + ... + 99631399.

It is an arithmetic number, because the mean of its divisors is an integer number (254034613350).

Almost surely, 2^{1989041201839} is an apocalyptic number.

1989041201839 is a deficient number, since it is larger than the sum of its proper divisors (43235704961).

1989041201839 is a wasteful number, since it uses less digits than its factorization.

1989041201839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199243049.

The product of its (nonzero) digits is 1119744, while the sum is 55.

The spelling of 1989041201839 in words is "one trillion, nine hundred eighty-nine billion, forty-one million, two hundred one thousand, eight hundred thirty-nine".