540193945 has 8 divisors (see below), whose sum is σ = 649244736. Its totient is φ = 431480496.

The previous prime is 540193909. The next prime is 540193961. The reversal of 540193945 is 549391045.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 540193945 - 2²⁵ = 506639513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 540193898 and 540193907.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80797 + ... + 87226.

It is an arithmetic number, because the mean of its divisors is an integer number (81155592).

Almost surely, 2^540193945 is an apocalyptic number.

It is an amenable number.

540193945 is a deficient number, since it is larger than the sum of its proper divisors (109050791).

540193945 is a wasteful number, since it uses less digits than its factorization.

540193945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168671.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 540193945 is about 23242.0727345906. The cubic root of 540193945 is about 814.4227636287.

The spelling of 540193945 in words is "five hundred forty million, one hundred ninety-three thousand, nine hundred forty-five".