506181969 has 12 divisors (see below), whose sum is σ = 731624400. Its totient is φ = 337236504.

The previous prime is 506181967. The next prime is 506181997. The reversal of 506181969 is 969181605.

506181969 is a `hidden beast` number, since 506 + 1 + 81 + 9 + 69 = 666.

It is not a de Polignac number, because 506181969 - 2¹ = 506181967 is a prime.

It is a super-2 number, since 2×506181969² = 512440371481433922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (506181961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2799 + ... + 31940.

It is an arithmetic number, because the mean of its divisors is an integer number (60968700).

Almost surely, 2^506181969 is an apocalyptic number.

It is an amenable number.

506181969 is a deficient number, since it is larger than the sum of its proper divisors (225442431).

506181969 is a wasteful number, since it uses less digits than its factorization.

506181969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36364 (or 36361 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 506181969 is about 22498.4881492068. The cubic root of 506181969 is about 796.9582246827.

The spelling of 506181969 in words is "five hundred six million, one hundred eighty-one thousand, nine hundred sixty-nine".