494957819 has 4 divisors (see below), whose sum is σ = 512025360. Its totient is φ = 477890280.

The previous prime is 494957807. The next prime is 494957833. The reversal of 494957819 is 918759494.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 918759494 = 2 ⋅459379747.

It is a cyclic number.

It is not a de Polignac number, because 494957819 - 2¹⁶ = 494892283 is a prime.

It is a super-2 number, since 2×494957819² = 489966485178473522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494957849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8533727 + ... + 8533784.

It is an arithmetic number, because the mean of its divisors is an integer number (128006340).

Almost surely, 2^494957819 is an apocalyptic number.

494957819 is a deficient number, since it is larger than the sum of its proper divisors (17067541).

494957819 is a wasteful number, since it uses less digits than its factorization.

494957819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17067540.

The product of its digits is 3265920, while the sum is 56.

The square root of 494957819 is about 22247.6474936115. The cubic root of 494957819 is about 791.0235192733.

The spelling of 494957819 in words is "four hundred ninety-four million, nine hundred fifty-seven thousand, eight hundred nineteen".