481807813 has 2 divisors, whose sum is σ = 481807814. Its totient is φ = 481807812.

The previous prime is 481807793. The next prime is 481807817. The reversal of 481807813 is 318708184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 427372929 + 54434884 = 20673^2 + 7378^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-481807813 is a prime.

It is a super-3 number, since 3×481807813³ (a number of 27 digits) contains 333 as substring.

It is equal to p_25446838 and since 481807813 and 25446838 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 (481807817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240903906 + 240903907.

It is an arithmetic number, because the mean of its divisors is an integer number (240903907).

Almost surely, 2^481807813 is an apocalyptic number.

It is an amenable number.

481807813 is a deficient number, since it is larger than the sum of its proper divisors (1).

481807813 is an equidigital number, since it uses as much as digits as its factorization.

481807813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 481807813 is about 21950.1210247233. The cubic root of 481807813 is about 783.9552618552.

The spelling of 481807813 in words is "four hundred eighty-one million, eight hundred seven thousand, eight hundred thirteen".