3158641 has 8 divisors (see below), whose sum is σ = 3274344. Its totient is φ = 3045120.

The previous prime is 3158633. The next prime is 3158671. The reversal of 3158641 is 1468513.

It can be written as a sum of positive squares in 4 ways, for example, as 646416 + 2512225 = 804^2 + 1585^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3158641 - 2³ = 3158633 is a prime.

It is a Duffinian number.

3158641 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3158671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2745 + ... + 3721.

It is an arithmetic number, because the mean of its divisors is an integer number (409293).

Almost surely, 2^3158641 is an apocalyptic number.

It is an amenable number.

3158641 is a deficient number, since it is larger than the sum of its proper divisors (115703).

3158641 is an equidigital number, since it uses as much as digits as its factorization.

3158641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091.

The product of its digits is 2880, while the sum is 28.

The square root of 3158641 is about 1777.2565937422. The cubic root of 3158641 is about 146.7236389087.

The spelling of 3158641 in words is "three million, one hundred fifty-eight thousand, six hundred forty-one".