3850813 has 2 divisors, whose sum is σ = 3850814. Its totient is φ = 3850812.

The previous prime is 3850811. The next prime is 3850829. The reversal of 3850813 is 3180583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3849444 + 1369 = 1962^2 + 37^2 .

It is a cyclic number.

It is not a de Polignac number, because 3850813 - 2¹ = 3850811 is a prime.

Together with 3850811, it forms a pair of twin primes.

It is equal to p₂₇₃₃₆₇ and since 3850813 and 273367 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3850811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1925406 + 1925407.

It is an arithmetic number, because the mean of its divisors is an integer number (1925407).

Almost surely, 2^3850813 is an apocalyptic number.

It is an amenable number.

3850813 is a deficient number, since it is larger than the sum of its proper divisors (1).

3850813 is an equidigital number, since it uses as much as digits as its factorization.

3850813 is an evil number, because the sum of its binary digits is even.

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

The square root of 3850813 is about 1962.3488476823. The cubic root of 3850813 is about 156.7415521479.

The spelling of 3850813 in words is "three million, eight hundred fifty thousand, eight hundred thirteen".