506940019 has 4 divisors (see below), whose sum is σ = 508217344. Its totient is φ = 505662696.

The previous prime is 506939989. The next prime is 506940041. The reversal of 506940019 is 910049605.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910049605 = 5 ⋅182009921.

It is a cyclic number.

It is not a de Polignac number, because 506940019 - 2⁷ = 506939891 is a prime.

It is a super-2 number, since 2×506940019² = 513976365727440722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506940059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638067 + ... + 638860.

It is an arithmetic number, because the mean of its divisors is an integer number (127054336).

Almost surely, 2^506940019 is an apocalyptic number.

506940019 is a deficient number, since it is larger than the sum of its proper divisors (1277325).

506940019 is a wasteful number, since it uses less digits than its factorization.

506940019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277324.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 506940019 is about 22515.3285341343. The cubic root of 506940019 is about 797.3558635354.

The spelling of 506940019 in words is "five hundred six million, nine hundred forty thousand, nineteen".