1989704429518 has 8 divisors (see below), whose sum is σ = 3214137924648. Its totient is φ = 918325121304.

The previous prime is 1989704429491. The next prime is 1989704429627. The reversal of 1989704429518 is 8159244079891.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38263546696 + ... + 38263546747.

It is an arithmetic number, because the mean of its divisors is an integer number (401767240581).

Almost surely, 2^{1989704429518} is an apocalyptic number.

1989704429518 is a deficient number, since it is larger than the sum of its proper divisors (1224433495130).

1989704429518 is a wasteful number, since it uses less digits than its factorization.

1989704429518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76527093458.

The product of its (nonzero) digits is 52254720, while the sum is 67.

The spelling of 1989704429518 in words is "one trillion, nine hundred eighty-nine billion, seven hundred four million, four hundred twenty-nine thousand, five hundred eighteen".