3813913 has 2 divisors, whose sum is σ = 3813914. Its totient is φ = 3813912.

The previous prime is 3813893. The next prime is 3813941. The reversal of 3813913 is 3193183.

It is an a-pointer prime, because the next prime (3813941) can be obtained adding 3813913 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3790809 + 23104 = 1947^2 + 152^2 .

It is a cyclic number.

It is not a de Polignac number, because 3813913 - 2⁹ = 3813401 is a prime.

It is not a weakly prime, because it can be changed into another prime (3813983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1906956 + 1906957.

It is an arithmetic number, because the mean of its divisors is an integer number (1906957).

Almost surely, 2^3813913 is an apocalyptic number.

It is an amenable number.

3813913 is a deficient number, since it is larger than the sum of its proper divisors (1).

3813913 is an equidigital number, since it uses as much as digits as its factorization.

3813913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 28.

The square root of 3813913 is about 1952.9242176797. The cubic root of 3813913 is about 156.2392914261.

The spelling of 3813913 in words is "three million, eight hundred thirteen thousand, nine hundred thirteen".