3801643 has 4 divisors (see below), whose sum is σ = 3894408. Its totient is φ = 3708880.

The previous prime is 3801631. The next prime is 3801661. The reversal of 3801643 is 3461083.

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

It is a cyclic number.

It is not a de Polignac number, because 3801643 - 2¹⁷ = 3670571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3801043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46321 + ... + 46402.

It is an arithmetic number, because the mean of its divisors is an integer number (973602).

Almost surely, 2^3801643 is an apocalyptic number.

3801643 is a deficient number, since it is larger than the sum of its proper divisors (92765).

3801643 is an equidigital number, since it uses as much as digits as its factorization.

3801643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92764.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 3801643 is about 1949.7802440275. The cubic root of 3801643 is about 156.0715620609.

It can be divided in two parts, 3801 and 643, that added together give a palindrome (4444).

The spelling of 3801643 in words is "three million, eight hundred one thousand, six hundred forty-three".