128119789 has 8 divisors (see below), whose sum is σ = 150380288. Its totient is φ = 106848720.

The previous prime is 128119781. The next prime is 128119811. The reversal of 128119789 is 987911821.

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 128119789 - 2³ = 128119781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128119781) 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, 247077 + ... + 247594.

It is an arithmetic number, because the mean of its divisors is an integer number (18797536).

Almost surely, 2^128119789 is an apocalyptic number.

It is an amenable number.

128119789 is a deficient number, since it is larger than the sum of its proper divisors (22260499).

128119789 is an equidigital number, since it uses as much as digits as its factorization.

128119789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494715.

The product of its digits is 72576, while the sum is 46.

The square root of 128119789 is about 11319.0012368583. The cubic root of 128119789 is about 504.1255841518.

The spelling of 128119789 in words is "one hundred twenty-eight million, one hundred nineteen thousand, seven hundred eighty-nine".