540188449 has 4 divisors (see below), whose sum is σ = 568619440. Its totient is φ = 511757460.

The previous prime is 540188443. The next prime is 540188459. The reversal of 540188449 is 944881045.

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 540188449 - 2²⁹ = 3317537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540188443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14215467 + ... + 14215504.

It is an arithmetic number, because the mean of its divisors is an integer number (142154860).

Almost surely, 2^540188449 is an apocalyptic number.

It is an amenable number.

540188449 is a deficient number, since it is larger than the sum of its proper divisors (28430991).

540188449 is a wasteful number, since it uses less digits than its factorization.

540188449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28430990.

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 540188449 is about 23241.9545004287. The cubic root of 540188449 is about 814.4200016067.

The spelling of 540188449 in words is "five hundred forty million, one hundred eighty-eight thousand, four hundred forty-nine".