530943905381 has 4 divisors (see below), whose sum is σ = 531504565152. Its totient is φ = 530383245612.

The previous prime is 530943905377. The next prime is 530943905407. The reversal of 530943905381 is 183509349035.

It is a happy number.

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 not a de Polignac number, because 530943905381 - 2² = 530943905377 is a prime.

It is a super-2 number, since 2×530943905381² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530943905321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280328465 + ... + 280330358.

It is an arithmetic number, because the mean of its divisors is an integer number (132876141288).

Almost surely, 2^530943905381 is an apocalyptic number.

It is an amenable number.

530943905381 is a deficient number, since it is larger than the sum of its proper divisors (560659771).

530943905381 is an equidigital number, since it uses as much as digits as its factorization.

530943905381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560659770.

The product of its (nonzero) digits is 1749600, while the sum is 50.

The spelling of 530943905381 in words is "five hundred thirty billion, nine hundred forty-three million, nine hundred five thousand, three hundred eighty-one".