513768941 has 4 divisors (see below), whose sum is σ = 587164512. Its totient is φ = 440373372.

The previous prime is 513768923. The next prime is 513768947. The reversal of 513768941 is 149867315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513768941 is a prime.

It is a super-2 number, since 2×513768941² = 527917049472522962, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 513768892 and 513768901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513768947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36697775 + ... + 36697788.

It is an arithmetic number, because the mean of its divisors is an integer number (146791128).

Almost surely, 2^513768941 is an apocalyptic number.

It is an amenable number.

513768941 is a deficient number, since it is larger than the sum of its proper divisors (73395571).

513768941 is an equidigital number, since it uses as much as digits as its factorization.

513768941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73395570.

The product of its digits is 181440, while the sum is 44.

The square root of 513768941 is about 22666.4717369069. The cubic root of 513768941 is about 800.9202644233.

The spelling of 513768941 in words is "five hundred thirteen million, seven hundred sixty-eight thousand, nine hundred forty-one".