519412681 has 2 divisors, whose sum is σ = 519412682. Its totient is φ = 519412680.

The previous prime is 519412661. The next prime is 519412693. The reversal of 519412681 is 186214915.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 500193225 + 19219456 = 22365^2 + 4384^2 .

It is a cyclic number.

It is not a de Polignac number, because 519412681 - 2¹³ = 519404489 is a prime.

It is a super-2 number, since 2×519412681² = 539579066367215522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 519412681.

It is not a weakly prime, because it can be changed into another prime (519412631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259706340 + 259706341.

It is an arithmetic number, because the mean of its divisors is an integer number (259706341).

Almost surely, 2^519412681 is an apocalyptic number.

It is an amenable number.

519412681 is a deficient number, since it is larger than the sum of its proper divisors (1).

519412681 is an equidigital number, since it uses as much as digits as its factorization.

519412681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 37.

The square root of 519412681 is about 22790.6270427121. The cubic root of 519412681 is about 803.8422878404.

The spelling of 519412681 in words is "five hundred nineteen million, four hundred twelve thousand, six hundred eighty-one".