1989424315736 has 32 divisors (see below), whose sum is σ = 4382298320400. Its totient is φ = 834723488640.

The previous prime is 1989424315721. The next prime is 1989424315759. The reversal of 1989424315736 is 6375134249891.

It is a happy number.

It is a congruent number.

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, 869502491 + ... + 869504778.

Almost surely, 2^{1989424315736} is an apocalyptic number.

It is an amenable number.

1989424315736 is an abundant number, since it is smaller than the sum of its proper divisors (2392874004664).

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

1989424315736 is a wasteful number, since it uses less digits than its factorization.

1989424315736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739007299 (or 1739007295 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 62.

The spelling of 1989424315736 in words is "one trillion, nine hundred eighty-nine billion, four hundred twenty-four million, three hundred fifteen thousand, seven hundred thirty-six".