146128389 has 32 divisors (see below), whose sum is σ = 222179328. Its totient is φ = 84624000.

The previous prime is 146128369. The next prime is 146128391. The reversal of 146128389 is 983821641.

146128389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 146128389 - 2²⁰ = 145079813 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 146128389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146128369) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84049 + ... + 85769.

It is an arithmetic number, because the mean of its divisors is an integer number (6943104).

Almost surely, 2^146128389 is an apocalyptic number.

It is an amenable number.

146128389 is a deficient number, since it is larger than the sum of its proper divisors (76050939).

146128389 is a wasteful number, since it uses less digits than its factorization.

146128389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849.

The product of its digits is 82944, while the sum is 42.

The square root of 146128389 is about 12088.3575807469. The cubic root of 146128389 is about 526.7180468932.

The spelling of 146128389 in words is "one hundred forty-six million, one hundred twenty-eight thousand, three hundred eighty-nine".