1019389389689 has 4 divisors (see below), whose sum is σ = 1112061152400. Its totient is φ = 926717626980.

The previous prime is 1019389389677. The next prime is 1019389389713. The reversal of 1019389389689 is 9869839839101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1019389389689 - 2⁴ = 1019389389673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1019389389649) 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, 46335881339 + ... + 46335881360.

It is an arithmetic number, because the mean of its divisors is an integer number (278015288100).

Almost surely, 2^{1019389389689} is an apocalyptic number.

It is an amenable number.

1019389389689 is a deficient number, since it is larger than the sum of its proper divisors (92671762711).

1019389389689 is an equidigital number, since it uses as much as digits as its factorization.

1019389389689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92671762710.

The product of its (nonzero) digits is 181398528, while the sum is 74.

The spelling of 1019389389689 in words is "one trillion, nineteen billion, three hundred eighty-nine million, three hundred eighty-nine thousand, six hundred eighty-nine".