540685189 has 8 divisors (see below), whose sum is σ = 592804800. Its totient is φ = 489060000.

The previous prime is 540685183. The next prime is 540685199. The reversal of 540685189 is 981586045.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 540685189 - 2²³ = 532296581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540685183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121312 + ... + 125689.

It is an arithmetic number, because the mean of its divisors is an integer number (74100600).

Almost surely, 2^540685189 is an apocalyptic number.

It is an amenable number.

540685189 is a deficient number, since it is larger than the sum of its proper divisors (52119611).

540685189 is a wasteful number, since it uses less digits than its factorization.

540685189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247211.

The product of its (nonzero) digits is 345600, while the sum is 46.

The square root of 540685189 is about 23252.6383234247. The cubic root of 540685189 is about 814.6695633108.

The spelling of 540685189 in words is "five hundred forty million, six hundred eighty-five thousand, one hundred eighty-nine".