3161789 has 4 divisors (see below), whose sum is σ = 3182880. Its totient is φ = 3140700.

The previous prime is 3161777. The next prime is 3161801. The reversal of 3161789 is 9871613.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9871613 = 89 ⋅110917.

It is an interprime number because it is at equal distance from previous prime (3161777) and next prime (3161801).

It is a cyclic number.

It is not a de Polignac number, because 3161789 - 2⁴ = 3161773 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3161749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10319 + ... + 10620.

It is an arithmetic number, because the mean of its divisors is an integer number (795720).

Almost surely, 2^3161789 is an apocalyptic number.

It is an amenable number.

3161789 is a deficient number, since it is larger than the sum of its proper divisors (21091).

3161789 is a wasteful number, since it uses less digits than its factorization.

3161789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21090.

The product of its digits is 9072, while the sum is 35.

The square root of 3161789 is about 1778.1420078273. The cubic root of 3161789 is about 146.7723658408.

The spelling of 3161789 in words is "three million, one hundred sixty-one thousand, seven hundred eighty-nine".