1600989189 has 4 divisors (see below), whose sum is σ = 2134652256. Its totient is φ = 1067326124.

The previous prime is 1600989113. The next prime is 1600989199. The reversal of 1600989189 is 9819890061.

It is a happy number.

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 1600989189 - 2²¹ = 1598892037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1600989199) 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, 266831529 + ... + 266831534.

It is an arithmetic number, because the mean of its divisors is an integer number (533663064).

Almost surely, 2^1600989189 is an apocalyptic number.

It is an amenable number.

1600989189 is a deficient number, since it is larger than the sum of its proper divisors (533663067).

1600989189 is an equidigital number, since it uses as much as digits as its factorization.

1600989189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533663066.

The product of its (nonzero) digits is 279936, while the sum is 51.

The square root of 1600989189 is about 40012.3629519677. The cubic root of 1600989189 is about 1169.8480794782.

The spelling of 1600989189 in words is "one billion, six hundred million, nine hundred eighty-nine thousand, one hundred eighty-nine".