516819442 has 8 divisors (see below), whose sum is σ = 777451500. Its totient is φ = 257668944.

The previous prime is 516819421. The next prime is 516819491. The reversal of 516819442 is 244918615.

It can be written as a sum of positive squares in 2 ways, for example, as 485805681 + 31013761 = 22041^2 + 5569^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 516819395 and 516819404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369517 + ... + 370912.

Almost surely, 2^516819442 is an apocalyptic number.

516819442 is a deficient number, since it is larger than the sum of its proper divisors (260632058).

516819442 is a wasteful number, since it uses less digits than its factorization.

516819442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740780.

The product of its digits is 69120, while the sum is 40.

The square root of 516819442 is about 22733.6631892003. The cubic root of 516819442 is about 802.5022910556.

The spelling of 516819442 in words is "five hundred sixteen million, eight hundred nineteen thousand, four hundred forty-two".