3161889 has 16 divisors (see below), whose sum is σ = 4717440. Its totient is φ = 2093040.

The previous prime is 3161887. The next prime is 3161891. The reversal of 3161889 is 9881613.

3161889 is a `hidden beast` number, since 31 + 618 + 8 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (3161887) and next prime (3161891).

It is not a de Polignac number, because 3161889 - 2¹ = 3161887 is a prime.

It is a super-3 number, since 3×3161889³ = 94833354688870915107, which contains 333 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3161887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4564 + ... + 5210.

It is an arithmetic number, because the mean of its divisors is an integer number (294840).

Almost surely, 2^3161889 is an apocalyptic number.

It is an amenable number.

3161889 is a deficient number, since it is larger than the sum of its proper divisors (1555551).

3161889 is a wasteful number, since it uses less digits than its factorization.

3161889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837 (or 831 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 3161889 is about 1778.1701268439. The cubic root of 3161889 is about 146.7739131802.

The spelling of 3161889 in words is "three million, one hundred sixty-one thousand, eight hundred eighty-nine".