540165869 has 2 divisors, whose sum is σ = 540165870. Its totient is φ = 540165868.

The previous prime is 540165841. The next prime is 540165881. The reversal of 540165869 is 968561045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 538843369 + 1322500 = 23213^2 + 1150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540165869 is a prime.

It is a super-2 number, since 2×540165869² = 583558332065050322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540165809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270082934 + 270082935.

It is an arithmetic number, because the mean of its divisors is an integer number (270082935).

Almost surely, 2^540165869 is an apocalyptic number.

It is an amenable number.

540165869 is a deficient number, since it is larger than the sum of its proper divisors (1).

540165869 is an equidigital number, since it uses as much as digits as its factorization.

540165869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 540165869 is about 23241.4687358609. The cubic root of 540165869 is about 814.4086538015.

The spelling of 540165869 in words is "five hundred forty million, one hundred sixty-five thousand, eight hundred sixty-nine".