1389133194 has 16 divisors (see below), whose sum is σ = 2805775200. Its totient is φ = 458459600.

The previous prime is 1389133181. The next prime is 1389133199. The reversal of 1389133194 is 4913319831.

1389133194 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1389133199) 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, 1145544 + ... + 1146755.

It is an arithmetic number, because the mean of its divisors is an integer number (175360950).

Almost surely, 2^1389133194 is an apocalyptic number.

1389133194 is an abundant number, since it is smaller than the sum of its proper divisors (1416642006).

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

1389133194 is a wasteful number, since it uses less digits than its factorization.

1389133194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292405.

The product of its digits is 69984, while the sum is 42.

The square root of 1389133194 is about 37271.0771778869. The cubic root of 1389133194 is about 1115.7869979915.

The spelling of 1389133194 in words is "one billion, three hundred eighty-nine million, one hundred thirty-three thousand, one hundred ninety-four".