506191469 has 4 divisors (see below), whose sum is σ = 578504544. Its totient is φ = 433878396.

The previous prime is 506191423. The next prime is 506191471. The reversal of 506191469 is 964191605.

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 not a de Polignac number, because 506191469 - 2²⁰ = 505142893 is a prime.

It is a super-2 number, since 2×506191469² = 512459606576755922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506191489) 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 in 3 ways as a sum of consecutive naturals, for example, 36156527 + ... + 36156540.

It is an arithmetic number, because the mean of its divisors is an integer number (144626136).

Almost surely, 2^506191469 is an apocalyptic number.

It is an amenable number.

506191469 is a deficient number, since it is larger than the sum of its proper divisors (72313075).

506191469 is an equidigital number, since it uses as much as digits as its factorization.

506191469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72313074.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 506191469 is about 22498.6992735136. The cubic root of 506191469 is about 796.9632104100.

The spelling of 506191469 in words is "five hundred six million, one hundred ninety-one thousand, four hundred sixty-nine".