3820161 has 8 divisors (see below), whose sum is σ = 5257984. Its totient is φ = 2464560.

The previous prime is 3820153. The next prime is 3820171. The reversal of 3820161 is 1610283.

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

It is not a de Polignac number, because 3820161 - 2³ = 3820153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3820111) 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, 20446 + ... + 20631.

It is an arithmetic number, because the mean of its divisors is an integer number (657248).

Almost surely, 2^3820161 is an apocalyptic number.

3820161 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3820161 is a deficient number, since it is larger than the sum of its proper divisors (1437823).

3820161 is a wasteful number, since it uses less digits than its factorization.

3820161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41111.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 3820161 is about 1954.5232155183. The cubic root of 3820161 is about 156.3245625997.

The spelling of 3820161 in words is "three million, eight hundred twenty thousand, one hundred sixty-one".