509442738419 has 8 divisors (see below), whose sum is σ = 544358675520. Its totient is φ = 475076658816.

The previous prime is 509442738397. The next prime is 509442738421. The reversal of 509442738419 is 914837244905.

It is a happy number.

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 509442738419 - 2⁸ = 509442738163 is a prime.

It is a super-2 number, since 2×509442738419² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (509442738019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137462459 + ... + 137466164.

It is an arithmetic number, because the mean of its divisors is an integer number (68044834440).

Almost surely, 2^509442738419 is an apocalyptic number.

509442738419 is a deficient number, since it is larger than the sum of its proper divisors (34915937101).

509442738419 is a wasteful number, since it uses less digits than its factorization.

509442738419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274928749.

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 509442738419 in words is "five hundred nine billion, four hundred forty-two million, seven hundred thirty-eight thousand, four hundred nineteen".