536865181 has 4 divisors (see below), whose sum is σ = 537107200. Its totient is φ = 536623164.

The previous prime is 536865167. The next prime is 536865187. The reversal of 536865181 is 181568635.

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-536865181 is a prime.

It is a super-2 number, since 2×536865181² = 576448445140325522, which 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 (536865187) 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, 117651 + ... + 122128.

It is an arithmetic number, because the mean of its divisors is an integer number (134276800).

Almost surely, 2^536865181 is an apocalyptic number.

It is an amenable number.

536865181 is a deficient number, since it is larger than the sum of its proper divisors (242019).

536865181 is a wasteful number, since it uses less digits than its factorization.

536865181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242018.

The product of its digits is 172800, while the sum is 43.

The square root of 536865181 is about 23170.3513352733. The cubic root of 536865181 is about 812.7464466133.

The spelling of 536865181 in words is "five hundred thirty-six million, eight hundred sixty-five thousand, one hundred eighty-one".