1889434339 has 8 divisors (see below), whose sum is σ = 2035197360. Its totient is φ = 1743731616.

The previous prime is 1889434331. The next prime is 1889434363. The reversal of 1889434339 is 9334349881.

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 1889434339 - 2³ = 1889434331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1889434331) 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, 66324 + ... + 90430.

It is an arithmetic number, because the mean of its divisors is an integer number (254399670).

Almost surely, 2^1889434339 is an apocalyptic number.

1889434339 is a deficient number, since it is larger than the sum of its proper divisors (145763021).

1889434339 is a wasteful number, since it uses less digits than its factorization.

1889434339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30149.

The product of its digits is 2239488, while the sum is 52.

The square root of 1889434339 is about 43467.6240321460. The cubic root of 1889434339 is about 1236.2622310549.

The spelling of 1889434339 in words is "one billion, eight hundred eighty-nine million, four hundred thirty-four thousand, three hundred thirty-nine".