540118639 has 2 divisors, whose sum is σ = 540118640. Its totient is φ = 540118638.

The previous prime is 540118613. The next prime is 540118693. The reversal of 540118639 is 936811045.

Together with next prime (540118693) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 540118639 - 2⁷ = 540118511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 540118598 and 540118607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540118739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270059319 + 270059320.

It is an arithmetic number, because the mean of its divisors is an integer number (270059320).

Almost surely, 2^540118639 is an apocalyptic number.

540118639 is a deficient number, since it is larger than the sum of its proper divisors (1).

540118639 is an equidigital number, since it uses as much as digits as its factorization.

540118639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 540118639 is about 23240.4526418915. The cubic root of 540118639 is about 814.3849168693.

The spelling of 540118639 in words is "five hundred forty million, one hundred eighteen thousand, six hundred thirty-nine".