3189145 has 4 divisors (see below), whose sum is σ = 3826980. Its totient is φ = 2551312.

The previous prime is 3189139. The next prime is 3189161. The reversal of 3189145 is 5419813.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 839056 + 2350089 = 916^2 + 1533^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3189145 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318910 + ... + 318919.

It is an arithmetic number, because the mean of its divisors is an integer number (956745).

Almost surely, 2^3189145 is an apocalyptic number.

It is an amenable number.

3189145 is a deficient number, since it is larger than the sum of its proper divisors (637835).

3189145 is an equidigital number, since it uses as much as digits as its factorization.

3189145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637834.

The product of its digits is 4320, while the sum is 31.

The square root of 3189145 is about 1785.8177398604. The cubic root of 3189145 is about 147.1944455066.

The spelling of 3189145 in words is "three million, one hundred eighty-nine thousand, one hundred forty-five".