540841891 has 2 divisors, whose sum is σ = 540841892. Its totient is φ = 540841890.

The previous prime is 540841883. The next prime is 540841949. The reversal of 540841891 is 198148045.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 540841891 - 2³ = 540841883 is a prime.

It is not a weakly prime, because it can be changed into another prime (540841811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270420945 + 270420946.

It is an arithmetic number, because the mean of its divisors is an integer number (270420946).

Almost surely, 2^540841891 is an apocalyptic number.

540841891 is a deficient number, since it is larger than the sum of its proper divisors (1).

540841891 is an equidigital number, since it uses as much as digits as its factorization.

540841891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 540841891 is about 23256.0076324377. The cubic root of 540841891 is about 814.7482585304.

The spelling of 540841891 in words is "five hundred forty million, eight hundred forty-one thousand, eight hundred ninety-one".