3161643 has 16 divisors (see below), whose sum is σ = 4561920. Its totient is φ = 1940096.

The previous prime is 3161629. The next prime is 3161647. The reversal of 3161643 is 3461613.

3161643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3161643 - 2⁵ = 3161611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3161647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1738 + ... + 3056.

It is an arithmetic number, because the mean of its divisors is an integer number (285120).

Almost surely, 2^3161643 is an apocalyptic number.

3161643 is a deficient number, since it is larger than the sum of its proper divisors (1400277).

3161643 is a wasteful number, since it uses less digits than its factorization.

3161643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386.

The product of its digits is 1296, while the sum is 24.

The square root of 3161643 is about 1778.1009532645. The cubic root of 3161643 is about 146.7701066667.

The spelling of 3161643 in words is "three million, one hundred sixty-one thousand, six hundred forty-three".