540813813 has 4 divisors (see below), whose sum is σ = 721085088. Its totient is φ = 360542540.

The previous prime is 540813811. The next prime is 540813829. The reversal of 540813813 is 318318045.

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 540813813 - 2¹ = 540813811 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540813811) 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, 90135633 + ... + 90135638.

It is an arithmetic number, because the mean of its divisors is an integer number (180271272).

Almost surely, 2^540813813 is an apocalyptic number.

It is an amenable number.

540813813 is a deficient number, since it is larger than the sum of its proper divisors (180271275).

540813813 is a wasteful number, since it uses less digits than its factorization.

540813813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180271274.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 540813813 is about 23255.4039526300. The cubic root of 540813813 is about 814.7341589708.

The spelling of 540813813 in words is "five hundred forty million, eight hundred thirteen thousand, eight hundred thirteen".