3813161 has 4 divisors (see below), whose sum is σ = 4159824. Its totient is φ = 3466500.

The previous prime is 3813149. The next prime is 3813169. The reversal of 3813161 is 1613183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3813161 - 2⁶ = 3813097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3813169) 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, 173315 + ... + 173336.

It is an arithmetic number, because the mean of its divisors is an integer number (1039956).

Almost surely, 2^3813161 is an apocalyptic number.

It is an amenable number.

3813161 is a deficient number, since it is larger than the sum of its proper divisors (346663).

3813161 is a wasteful number, since it uses less digits than its factorization.

3813161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346662.

The product of its digits is 432, while the sum is 23.

The square root of 3813161 is about 1952.7316763959. The cubic root of 3813161 is about 156.2290220370.

The spelling of 3813161 in words is "three million, eight hundred thirteen thousand, one hundred sixty-one".