540313978 has 4 divisors (see below), whose sum is σ = 810470970. Its totient is φ = 270156988.

The previous prime is 540313967. The next prime is 540314023. The reversal of 540313978 is 879313045.

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

It can be written as a sum of positive squares in only one way, i.e., 485893849 + 54420129 = 22043^2 + 7377^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 540313978.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135078493 + ... + 135078496.

Almost surely, 2^540313978 is an apocalyptic number.

540313978 is a deficient number, since it is larger than the sum of its proper divisors (270156992).

540313978 is a wasteful number, since it uses less digits than its factorization.

540313978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270156991.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 540313978 is about 23244.6548264327. The cubic root of 540313978 is about 814.4830816982.

The spelling of 540313978 in words is "five hundred forty million, three hundred thirteen thousand, nine hundred seventy-eight".