4945813 has 2 divisors, whose sum is σ = 4945814. Its totient is φ = 4945812.

The previous prime is 4945807. The next prime is 4945849. The reversal of 4945813 is 3185494.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4028049 + 917764 = 2007^2 + 958^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4945813 is a prime.

It is a super-2 number, since 2×4945813² = 48922132461938, which contains 22 as substring.

It is equal to p₃₄₄₉₆₈ and since 4945813 and 344968 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 (4945513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2472906 + 2472907.

It is an arithmetic number, because the mean of its divisors is an integer number (2472907).

Almost surely, 2^4945813 is an apocalyptic number.

It is an amenable number.

4945813 is a deficient number, since it is larger than the sum of its proper divisors (1).

4945813 is an equidigital number, since it uses as much as digits as its factorization.

4945813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 4945813 is about 2223.9183887904. The cubic root of 4945813 is about 170.3776265195.

The spelling of 4945813 in words is "four million, nine hundred forty-five thousand, eight hundred thirteen".