540948491 has 4 divisors (see below), whose sum is σ = 543331752. Its totient is φ = 538565232.

The previous prime is 540948467. The next prime is 540948493. The reversal of 540948491 is 194849045.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 540948491 - 2¹⁸ = 540686347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540948493) 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, 1191290 + ... + 1191743.

It is an arithmetic number, because the mean of its divisors is an integer number (135832938).

Almost surely, 2^540948491 is an apocalyptic number.

540948491 is a deficient number, since it is larger than the sum of its proper divisors (2383261).

540948491 is a wasteful number, since it uses less digits than its factorization.

540948491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383260.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 540948491 is about 23258.2994004291. The cubic root of 540948491 is about 814.8017840063.

The spelling of 540948491 in words is "five hundred forty million, nine hundred forty-eight thousand, four hundred ninety-one".